• Arhiiv
    • Eesti füüsikapäevad ja füüsikaõpetajate päevad
      • 2017.a. füüsikapäevad
      • 2016.a. füüsikapäevad
      • 2015. a. füüsikapäevad
      • 2003.a. füüsikaõpetajate päev
    • EFS Täppisteaduste Suve- ja Sügiskoolid
      • 2017.a. sügiskool
      • 2016.a. sügiskool
      • 2015.a. sügiskool
      • 2014.a. sügiskool
      • 2013.a. suvekool
      • 2013.a. sügiskool
      • 2012.a. suvekool
      • 2012.a. sügiskool
      • 2011. a. suvekool
      • 2010. a. suvekool
      • 2010.a. sügiskool
      • 2009.a. sügiskool
      • 2008.a. suvekool
      • 2008.a. sügiskool
      • 2007. a. suvekool
      • 2007.a. sügiskool
      • 2006.a. suvekool
      • 2005.a. suvekool
      • 2005.a. sügiskool
      • 2004.a. suvekool
      • 2004.a. sügiskool
    • Füüsika õpetajate sügisseminarid Voorel
      • Voore 2017
      • Voore 2015
      • Voore 2011
      • Voore 2009
    • EFS aastaraamatud
    • Teaduslaagrid
    • Akadeemiline füüsikaolümpiaad
    • Tähe perepäevad TÄPE

FYYSIKA.EE

Elu, loodus, teadus ja tehnoloogia

  • Eestist endast
    • Arvamus
    • Teated
    • Persoon
    • Eesti füüsikaolümpiaadid
  • Teadusuudised
    • Eesti teadusuudised
      • Tartu Ülikool
      • KBFI
      • Tallinna Tehnikaülikool
      • Tõravere Observatoorium
    • FYYSIKA.EE hoiab silma peal – Teemad
    • Referaadinurgake
    • Päevapilt
  • Eesti Füüsika Selts
    • Teadusbuss
    • Füüsika, keemia ja bioloogia õpikojad
    • Füüsika e-õpikud
    • Eesti Füüsika Seltsi põhikiri
  • Füüsikaõpetajate osakond
    • Füüsikaõpetajate võrgustik
  • Füüsikaüliõpilaste Selts
  • Kontakt

Half Layer By Half Layer Growth of a Blue Phosphorene Monolayer on a GaN(001) Substrate

27.01.2017 by Kaido Reivelt

Author(s): Jiang Zeng, Ping Cui, and Zhenyu ZhangFirst-principles calculations suggest a new kinetic pathway for growing either black or blue phosphorene monolayers on metallic and semiconducting substrates.[Phys. Rev. Lett. 118, 046101] Published Fri …

Filed Under: RSS Teadus

Observation of Mode-Locked Spatial Laser Solitons

27.01.2017 by Kaido Reivelt

Author(s): F. Gustave, N. Radwell, C. McIntyre, J. P. Toomey, D. M. Kane, S. Barland, W. J. Firth, G.-L. Oppo, and T. Ackemann

The formation of stable spatiotemporal structures—solitons—is observed in a vertical-cavity surface-emitting laser.


[Phys. Rev. Lett. 118, 044102] Published Fri Jan 27, 2017

Filed Under: RSS Teadus

Flexural-Phonon Scattering Induced by Electrostatic Gating in Graphene

27.01.2017 by Kaido Reivelt

Author(s): Tue Gunst, Kristen Kaasbjerg, and Mads BrandbygePhonon scattering, in conjunction with the electrostatic and dielectric environments, can limit the transport performance of graphene devices.[Phys. Rev. Lett. 118, 046601] Published Fri Jan 27…

Filed Under: RSS Teadus

Strange Quark Magnetic Moment of the Nucleon at the Physical Point

27.01.2017 by Kaido Reivelt

Author(s): Raza Sabbir Sufian, Yi-Bo Yang, Andrei Alexandru, Terrence Draper, Jian Liang, and Keh-Fei Liu (χQCD Collaboration)

The strange quark contribution to magnetic moment and charge radius is extracted from lattice simulations. These are the first such simulations to be carried out using the physical pion mass.


[Phys. Rev. Lett. 118, 042001] Published Fri Jan 27, 2017

Filed Under: RSS Teadus

Weyl Exceptional Rings in a Three-Dimensional Dissipative Cold Atomic Gas

27.01.2017 by Kaido Reivelt

Author(s): Yong Xu, Sheng-Tao Wang, and L.-M. DuanA new topological gapless ring of nondegenerate states, characterized by both a quantized Chern number and a quantized Berry phase, is predicted to occur in 3D dissipative systems.[Phys. Rev. Lett. 118,…

Filed Under: RSS Teadus

Topologically Entangled Rashba-Split Shockley States on the Surface of Grey Arsenic

27.01.2017 by Kaido Reivelt

Author(s): Peng Zhang, J.-Z. Ma, Y. Ishida, L.-X. Zhao, Q.-N. Xu, B.-Q. Lv, K. Yaji, G.-F. Chen, H.-M. Weng, X. Dai, Z. Fang, X.-Q. Chen, L. Fu, T. Qian, H. Ding, and S. ShinElectronic states that only exist on the surface and not in the bulk are predi…

Filed Under: RSS Teadus

Strange Quark Magnetic Moment of the Nucleon at the Physical Point

27.01.2017 by Kaido Reivelt

Author(s): Raza Sabbir Sufian, Yi-Bo Yang, Andrei Alexandru, Terrence Draper, Jian Liang, and Keh-Fei Liu (χQCD Collaboration)

The strange quark contribution to magnetic moment and charge radius is extracted from lattice simulations. These are the first such simulations to be carried out using the physical pion mass.


[Phys. Rev. Lett. 118, 042001] Published Fri Jan 27, 2017

Filed Under: RSS Teadus

One-Dimensional Self-Organization and Nonequilibrium Phase Transition in a Hamiltonian System

27.01.2017 by Kaido Reivelt

Author(s): Jiao Wang and Giulio CasatiNonequilibrium phase transitions, known from 2D and 3D systems, are also demonstrated in 1D, with implications for transport in these systems.[Phys. Rev. Lett. 118, 040601] Published Fri Jan 27, 2017

Filed Under: RSS Teadus

Vulnerability and Cosusceptibility Determine the Size of Network Cascades

27.01.2017 by Kaido Reivelt

Author(s): Yang Yang, Takashi Nishikawa, and Adilson E. MotterSpecific clusters within a network tend to fail consistently as part of large-scale network failures, such as those in electrical grids or airline transportation systems.[Phys. Rev. Lett. 11…

Filed Under: RSS Teadus

Flexural-Phonon Scattering Induced by Electrostatic Gating in Graphene

27.01.2017 by Kaido Reivelt

Author(s): Tue Gunst, Kristen Kaasbjerg, and Mads BrandbygePhonon scattering, in conjunction with the electrostatic and dielectric environments, can limit the transport performance of graphene devices.[Phys. Rev. Lett. 118, 046601] Published Fri Jan 27…

Filed Under: RSS Teadus

Half Layer By Half Layer Growth of a Blue Phosphorene Monolayer on a GaN(001) Substrate

27.01.2017 by Kaido Reivelt

Author(s): Jiang Zeng, Ping Cui, and Zhenyu ZhangFirst-principles calculations suggest a new kinetic pathway for growing either black or blue phosphorene monolayers on metallic and semiconducting substrates.[Phys. Rev. Lett. 118, 046101] Published Fri …

Filed Under: RSS Teadus

Observation of Mode-Locked Spatial Laser Solitons

27.01.2017 by Kaido Reivelt

Author(s): F. Gustave, N. Radwell, C. McIntyre, J. P. Toomey, D. M. Kane, S. Barland, W. J. Firth, G.-L. Oppo, and T. Ackemann

The formation of stable spatiotemporal structures—solitons—is observed in a vertical-cavity surface-emitting laser.


[Phys. Rev. Lett. 118, 044102] Published Fri Jan 27, 2017

Filed Under: RSS Teadus

Weyl Exceptional Rings in a Three-Dimensional Dissipative Cold Atomic Gas

27.01.2017 by Kaido Reivelt

Author(s): Yong Xu, Sheng-Tao Wang, and L.-M. DuanA new topological gapless ring of nondegenerate states, characterized by both a quantized Chern number and a quantized Berry phase, is predicted to occur in 3D dissipative systems.[Phys. Rev. Lett. 118,…

Filed Under: RSS Teadus

Liftoff for SmallGEO

27.01.2017 by Kaido Reivelt


ESA’s new small telecom platform, SmallGEO, was launched on its first mission at 01:03 GMT on 28 January from Europe’s Spaceport

Filed Under: RSS Kosmos

Week In Images

27.01.2017 by Kaido Reivelt

Our week through the lens: 23-27 January 2017

Filed Under: RSS Kosmos

First SmallGEO launch

27.01.2017 by Kaido Reivelt

Watch the first launch of ESA’s new SmallGEO platform from Europe’s Spaceport in French Guiana atop a Soyuz launcher. Streaming starts at 01:46 CET on Saturday 28 January

Filed Under: RSS Kosmos

A New Test for Life on Other Planets

26.01.2017 by Kaido Reivelt

On an otherworldly landscape in Mono Lake, California, scientists have tested a new method for potentially detecting chemical signatures of life on another planet.

Filed Under: RSS Kosmos

A New Test for Life on Other Planets

26.01.2017 by Kaido Reivelt

On an otherworldly landscape in Mono Lake, California, scientists have tested a new method for potentially detecting chemical signatures of life on another planet.

Filed Under: RSS Kosmos

Spontaneous Breakdown of Topological Protection in Two Dimensions

26.01.2017 by Kaido Reivelt

Author(s): Jianhui Wang, Yigal Meir, and Yuval GefenA topological insulator with beveled, as opposed to sharp, edges might lose the attributes that make it attractive for applications.[Phys. Rev. Lett. 118, 046801] Published Thu Jan 26, 2017

Filed Under: RSS Teadus

Lifetime Measurement of the ^{229} Th nuclear isomer

26.01.2017 by Kaido Reivelt

Author(s): Benedict Seiferle, Lars von der Wense, and Peter G. Thirolf

The half-life of 229Th has been measured to be 7±1μs.


[Phys. Rev. Lett. 118, 042501] Published Thu Jan 26, 2017

Filed Under: RSS Teadus

Lifetime Measurement of the ^{229} Th nuclear isomer

26.01.2017 by Kaido Reivelt

Author(s): Benedict Seiferle, Lars von der Wense, and Peter G. Thirolf

The half-life of 229Th has been measured to be 7±1μs.


[Phys. Rev. Lett. 118, 042501] Published Thu Jan 26, 2017

Filed Under: RSS Teadus

Spontaneous Breakdown of Topological Protection in Two Dimensions

26.01.2017 by Kaido Reivelt

Author(s): Jianhui Wang, Yigal Meir, and Yuval GefenA topological insulator with beveled, as opposed to sharp, edges might lose the attributes that make it attractive for applications.[Phys. Rev. Lett. 118, 046801] Published Thu Jan 26, 2017

Filed Under: RSS Teadus

Earth from Space

26.01.2017 by Kaido Reivelt


Join us Friday, 27 January, at 10:00 CET for the ‘Earth from Space’ video programme. This week features the Sierra Madera crater in the US state of Texas

Filed Under: RSS Kosmos

HOLiCOW! Astronomers measuring the expansion of the universe confirm that we still don’t understand everything

26.01.2017 by Kaido Reivelt

The most recent independent measurement of the Hubble constant indicates our models might need some tweaking.

Filed Under: RSS Kosmos

The scorched Apollo 1 hatch will be on display after 50 years

26.01.2017 by Kaido Reivelt

The three astronauts who tragically passed away will be commemorated in the display

Filed Under: RSS Kosmos

Sunburnt country

26.01.2017 by Kaido Reivelt


Operations image of the week: ESA’s deep-space dish at New Norcia squats on some of Australia’s famously iron-rich soils

Filed Under: RSS Kosmos

Temple for the Moon

26.01.2017 by Kaido Reivelt


Technology image of the week: ESA’s artist-in-residence has designed a place of contemplation to build at the Moon’s south pole

Filed Under: RSS Kosmos

Study Tracks ‘Memory’ of Soil Moisture

25.01.2017 by Kaido Reivelt

The first year of data from NASA’s SMAP mission provides surprising findings that will help in forecasting weather and monitoring crop growth.

Filed Under: RSS Kosmos

Similar-Looking Ridges on Mars Have Diverse Origins

25.01.2017 by Kaido Reivelt

Thin, blade-like walls, some as tall as a 16-story building, dominate a previously undocumented network of intersecting ridges on Mars, found in images from NASA’s Mars Reconnaissance Orbiter.

Filed Under: RSS Kosmos

Study Tracks ‘Memory’ of Soil Moisture

25.01.2017 by Kaido Reivelt

The first year of data from NASA’s SMAP mission provides surprising findings that will help in forecasting weather and monitoring crop growth.

Filed Under: RSS Kosmos

Similar-Looking Ridges on Mars Have Diverse Origins

25.01.2017 by Kaido Reivelt

Thin, blade-like walls, some as tall as a 16-story building, dominate a previously undocumented network of intersecting ridges on Mars, found in images from NASA’s Mars Reconnaissance Orbiter.

Filed Under: RSS Kosmos

Inspiring call

25.01.2017 by Kaido Reivelt

Human spaceflight and robotic exploration image of the week: Children in Ireland during a live event with Thomas Pesquet in space

Filed Under: RSS Kosmos

How astronomers are using artificial brains to study supernova

25.01.2017 by Kaido Reivelt

You might call it AIstronomy.

Filed Under: RSS Kosmos

Visualization of Kepler’s laws of planetary motion

25.01.2017 by Kaido Reivelt

For this article, we use a 3D printer to print a surface similar to universal gravitation for
demonstrating and investigating Kepler’s laws of planetary motion describing the motion of a small
ball on the surface. This novel experimental method all…

Filed Under: RSS Füüsikaharidus

Twenty-four tuba harmonics using a single pipe length

25.01.2017 by Kaido Reivelt

Harmonics arise naturally from the resonances in strings and pipes. A video demonstration (Ruiz 2016
YouTube: Tuba Harmonics ( https://youtu.be/souhEzOP9c4 [https://youtu.be/souhEzOP9c4] )) is provided
where a tubist (coauthor Holmes) produces a phen…

Filed Under: RSS Füüsikaharidus

An accessible four-dimensional treatment of Maxwell’s equations in terms of differential forms

25.01.2017 by Kaido Reivelt

Maxwell’s equations are derived in terms of differential forms in the four-dimensional Minkowski
representation, starting from the three-dimensional vector calculus differential version of these
equations. Introducing all the mathematical and physi…

Filed Under: RSS Füüsikaharidus

Visualization of Kepler’s laws of planetary motion

25.01.2017 by Kaido Reivelt

For this article, we use a 3D printer to print a surface similar to universal gravitation for
demonstrating and investigating Kepler’s laws of planetary motion describing the motion of a small
ball on the surface. This novel experimental method all…

Filed Under: RSS Füüsikaharidus

Twenty-four tuba harmonics using a single pipe length

25.01.2017 by Kaido Reivelt

Harmonics arise naturally from the resonances in strings and pipes. A video demonstration (Ruiz 2016
YouTube: Tuba Harmonics ( https://youtu.be/souhEzOP9c4 [https://youtu.be/souhEzOP9c4] )) is provided
where a tubist (coauthor Holmes) produces a phen…

Filed Under: RSS Füüsikaharidus

An accessible four-dimensional treatment of Maxwell’s equations in terms of differential forms

25.01.2017 by Kaido Reivelt

Maxwell’s equations are derived in terms of differential forms in the four-dimensional Minkowski
representation, starting from the three-dimensional vector calculus differential version of these
equations. Introducing all the mathematical and physi…

Filed Under: RSS Füüsikaharidus

NASA Dust-on-Snow Data Help Colorado River Managers

24.01.2017 by Kaido Reivelt

NASA measures the dust on the Colorado and Utah snowpack to help forecast water supplies in the Colorado River Basin.

Filed Under: RSS Kosmos

NuSTAR Finds New Clues to ‘Chameleon Supernova’

24.01.2017 by Kaido Reivelt

The supernova SN 2014C dramatically changed in appearance over the course of a year, apparently because it had thrown off a lot of material late in its life.

Filed Under: RSS Kosmos

NASA Dust-on-Snow Data Help Colorado River Managers

24.01.2017 by Kaido Reivelt

NASA measures the dust on the Colorado and Utah snowpack to help forecast water supplies in the Colorado River Basin.

Filed Under: RSS Kosmos

NuSTAR Finds New Clues to ‘Chameleon Supernova’

24.01.2017 by Kaido Reivelt

The supernova SN 2014C dramatically changed in appearance over the course of a year, apparently because it had thrown off a lot of material late in its life.

Filed Under: RSS Kosmos

Detecting gravitational waves just got easier

24.01.2017 by Kaido Reivelt

The Albert Einstein Institute in Potsdam has increased its computing power more than sixfold with the Minerva supercomputer.

Filed Under: RSS Kosmos

Fallout from an ancient asteroid collision still rains on Earth

24.01.2017 by Kaido Reivelt

Extraterrestrial objects are constantly bombarding Earth; thankfully the vast majority are microscopic.

Thanks to the planet’s atmosphere, we live largely unaware of this celestial fusillade, which averages about 100 tons a day and mostly burns …

Filed Under: RSS Kosmos

What dark gunk on Enceladus’ surface reveals about the ocean below

24.01.2017 by Kaido Reivelt

As the plumes spray out, they are radically altered — and that could be the clue to understanding their origin.

Filed Under: RSS Kosmos

Solution strategies for constant acceleration problems

24.01.2017 by Kaido Reivelt

We discuss strategies for the general solution of single-step 1D constant acceleration problems. In
a slightly restricted form, these problems have five variables (Δ x , v 0 , v , a and t ) and two
independent equations, so three variables must be g…

Filed Under: RSS Füüsikaharidus

Time-lapse and slow-motion tracking of temperature changes: response time of a thermometer

24.01.2017 by Kaido Reivelt

We propose the use of a smartphone based time-lapse and slow-motion video techniques together with
tracking analysis as valuable tools for investigating thermal processes such as the response time of
a thermometer. The two simple experimental activit…

Filed Under: RSS Füüsikaharidus

Solution strategies for constant acceleration problems

24.01.2017 by Kaido Reivelt

We discuss strategies for the general solution of single-step 1D constant acceleration problems. In
a slightly restricted form, these problems have five variables (Δ x , v 0 , v , a and t ) and two
independent equations, so three variables must be g…

Filed Under: RSS Füüsikaharidus

Time-lapse and slow-motion tracking of temperature changes: response time of a thermometer

24.01.2017 by Kaido Reivelt

We propose the use of a smartphone based time-lapse and slow-motion video techniques together with
tracking analysis as valuable tools for investigating thermal processes such as the response time of
a thermometer. The two simple experimental activit…

Filed Under: RSS Füüsikaharidus

Accelerating Plasma Mirrors to Investigate the Black Hole Information Loss Paradox

23.01.2017 by Kaido Reivelt

Author(s): Pisin Chen and Gerard MourouA proposal for using an accelerated plasma mirror to study the black hole information paradox elevates a thought experiment into a potential reality.[Phys. Rev. Lett. 118, 045001] Published Mon Jan 23, 2017

Filed Under: RSS Teadus

Light-Induced Pulling and Pushing by the Synergic Effect of Optical Force and Photophoretic Force

23.01.2017 by Kaido Reivelt

Author(s): Jinsheng Lu, Hangbo Yang, Lina Zhou, Yuanqing Yang, Si Luo, Qiang Li, and Min Qiu

Two forces coming from a light beam—one based on momentum transfer, the other on thermal effects—force a tiny gold plate to move in opposite directions.


[Phys. Rev. Lett. 118, 043601] Published Mon Jan 23, 2017

Filed Under: RSS Teadus

Accelerating Plasma Mirrors to Investigate the Black Hole Information Loss Paradox

23.01.2017 by Kaido Reivelt

Author(s): Pisin Chen and Gerard MourouA proposal for using an accelerated plasma mirror to study the black hole information paradox elevates a thought experiment into a potential reality.[Phys. Rev. Lett. 118, 045001] Published Mon Jan 23, 2017

Filed Under: RSS Teadus

Light-Induced Pulling and Pushing by the Synergic Effect of Optical Force and Photophoretic Force

23.01.2017 by Kaido Reivelt

Author(s): Jinsheng Lu, Hangbo Yang, Lina Zhou, Yuanqing Yang, Si Luo, Qiang Li, and Min Qiu

Two forces coming from a light beam—one based on momentum transfer, the other on thermal effects—force a tiny gold plate to move in opposite directions.


[Phys. Rev. Lett. 118, 043601] Published Mon Jan 23, 2017

Filed Under: RSS Teadus

New NASA video visualizes landing on Pluto

23.01.2017 by Kaido Reivelt

Get ready for an exciting cyber landing

Filed Under: RSS Kosmos

Seasons turn

23.01.2017 by Kaido Reivelt


Space Science Image of the Week: Two observations over a month apart show the appearance of frost at Mars’ north pole

Filed Under: RSS Kosmos

A new phenomenon?

23.01.2017 by Kaido Reivelt

This letter describes an interesting optical phenomenon engaging the reflected images of a new tube
LED lamp (an array of high luminosity LEDs substituting the old fluorescent lamps) on any convex
glossy black surface.

Filed Under: RSS Füüsikaharidus

Analysis of the wobbling effect in a lens-shaped body rotation

23.01.2017 by Kaido Reivelt

We discuss the wobbling motion in a lens-shaped body rotation, focusing on the frequencies and the
amplitude of nutation by filming the rotational motion and wobbling of the body. The friction
coefficient of the surface is altered to examine its infl…

Filed Under: RSS Füüsikaharidus

A full quantum analysis of the Stern–Gerlach experiment using the evolution operator method: analyzing current issues in teaching quantum mechanics

23.01.2017 by Kaido Reivelt

To the quantum mechanics specialists community it is a well-known fact that the famous original
Stern–Gerlach experiment (SGE) produces entanglement between the external degrees of freedom
(position) and the internal degree of freedom (spin) of sil…

Filed Under: RSS Füüsikaharidus

A new phenomenon?

23.01.2017 by Kaido Reivelt

This letter describes an interesting optical phenomenon engaging the reflected images of a new tube
LED lamp (an array of high luminosity LEDs substituting the old fluorescent lamps) on any convex
glossy black surface.

Filed Under: RSS Füüsikaharidus

Analysis of the wobbling effect in a lens-shaped body rotation

23.01.2017 by Kaido Reivelt

We discuss the wobbling motion in a lens-shaped body rotation, focusing on the frequencies and the
amplitude of nutation by filming the rotational motion and wobbling of the body. The friction
coefficient of the surface is altered to examine its infl…

Filed Under: RSS Füüsikaharidus

A full quantum analysis of the Stern–Gerlach experiment using the evolution operator method: analyzing current issues in teaching quantum mechanics

23.01.2017 by Kaido Reivelt

To the quantum mechanics specialists community it is a well-known fact that the famous original
Stern–Gerlach experiment (SGE) produces entanglement between the external degrees of freedom
(position) and the internal degree of freedom (spin) of sil…

Filed Under: RSS Füüsikaharidus

Redefining the Axion Window

20.01.2017 by Kaido Reivelt

Author(s): Luca Di Luzio, Federico Mescia, and Enrico NardiThe region of parameter space corresponding to realistic models in which axions may exist is considerably larger than assumed.[Phys. Rev. Lett. 118, 031801] Published Fri Jan 20, 2017

Filed Under: RSS Teadus

Orbitalwise Coordination Number for Predicting Adsorption Properties of Metal Nanocatalysts

20.01.2017 by Kaido Reivelt

Author(s): Xianfeng Ma and Hongliang XinA microscopic coordination number affects the macroscopic catalytic properties of metallic nanoparticles.[Phys. Rev. Lett. 118, 036101] Published Fri Jan 20, 2017

Filed Under: RSS Teadus

Redefining the Axion Window

20.01.2017 by Kaido Reivelt

Author(s): Luca Di Luzio, Federico Mescia, and Enrico NardiThe region of parameter space corresponding to realistic models in which axions may exist is considerably larger than assumed.[Phys. Rev. Lett. 118, 031801] Published Fri Jan 20, 2017

Filed Under: RSS Teadus

Orbitalwise Coordination Number for Predicting Adsorption Properties of Metal Nanocatalysts

20.01.2017 by Kaido Reivelt

Author(s): Xianfeng Ma and Hongliang XinA microscopic coordination number affects the macroscopic catalytic properties of metallic nanoparticles.[Phys. Rev. Lett. 118, 036101] Published Fri Jan 20, 2017

Filed Under: RSS Teadus

Week In Images

20.01.2017 by Kaido Reivelt

Our week through the lens: 16-20 January 2017

Filed Under: RSS Kosmos

Week In Images

20.01.2017 by Kaido Reivelt

Our week through the lens: 16-20 January 2017

Filed Under: RSS Kosmos

Space Station Moon

20.01.2017 by Kaido Reivelt

International Space Station and Moon seen from Spain

Filed Under: RSS Kosmos

Space Station Moon

20.01.2017 by Kaido Reivelt

International Space Station and Moon seen from Spain

Filed Under: RSS Kosmos

What is an image?

20.01.2017 by Kaido Reivelt

In basic physics, often in their first year of study of the subject, students meet the concept of an
image, for example when using pinhole cameras and finding the position of an image in a mirror. They
are also familiar with the term in photography a…

Filed Under: RSS Füüsikaharidus

The Lagrangian points

20.01.2017 by Kaido Reivelt

There are five unique points in a star/planet system where a satellite can be placed whose orbital
period is equal to that of the planet. Simple methods for calculating the positions of these points,
or at least justifying their existence, are develo…

Filed Under: RSS Füüsikaharidus

Phonocardiography with a smartphone

20.01.2017 by Kaido Reivelt

When a stethoscope is placed on the chest over the heart, sounds coming from the heart can be
directly heard. These sound vibrations can be captured through a microphone and the electrical
signals from the transducer can be processed and plotted in a…

Filed Under: RSS Füüsikaharidus

Flutist produces four resonances with a single bottle

20.01.2017 by Kaido Reivelt

In a dramatic physics demonstration, a professional flutist produces four resonances with a 12 ounce
Boylan soda bottle solely through her breath control. The 22 cm bottle acts like a Helmholtz
resonator for the lowest pitch. The three higher pitch…

Filed Under: RSS Füüsikaharidus

An educational contribution to the inadequacy of interpreting the photoelectric effect through the classical theory

20.01.2017 by Kaido Reivelt

We develop a simulation to facilitate the teaching of the photoelectric effect in an introductory
course on quantum mechanics at undergraduate level. Through a Visual Basic program we describe the
interaction of light with electrons in a metal conduc…

Filed Under: RSS Füüsikaharidus

Fast converging exact power series for the time and period of the simple pendulum

20.01.2017 by Kaido Reivelt

A time explicit fast converging exact power series solution to the pendulum equation is derived in
this paper. A novel series for the period results from it. The approximate formula that comprises
the first three terms gives an accuracy of 99.99% up …

Filed Under: RSS Füüsikaharidus

An educational contribution to the inadequacy of interpreting the photoelectric effect through the classical theory

20.01.2017 by Kaido Reivelt

We develop a simulation to facilitate the teaching of the photoelectric effect in an introductory
course on quantum mechanics at undergraduate level. Through a Visual Basic program we describe the
interaction of light with electrons in a metal conduc…

Filed Under: RSS Füüsikaharidus

Fast converging exact power series for the time and period of the simple pendulum

20.01.2017 by Kaido Reivelt

A time explicit fast converging exact power series solution to the pendulum equation is derived in
this paper. A novel series for the period results from it. The approximate formula that comprises
the first three terms gives an accuracy of 99.99% up …

Filed Under: RSS Füüsikaharidus

The Lagrangian points

20.01.2017 by Kaido Reivelt

There are five unique points in a star/planet system where a satellite can be placed whose orbital
period is equal to that of the planet. Simple methods for calculating the positions of these points,
or at least justifying their existence, are develo…

Filed Under: RSS Füüsikaharidus

Flutist produces four resonances with a single bottle

20.01.2017 by Kaido Reivelt

In a dramatic physics demonstration, a professional flutist produces four resonances with a 12 ounce
Boylan soda bottle solely through her breath control. The 22 cm bottle acts like a Helmholtz
resonator for the lowest pitch. The three higher pitch…

Filed Under: RSS Füüsikaharidus

What is an image?

20.01.2017 by Kaido Reivelt

In basic physics, often in their first year of study of the subject, students meet the concept of an
image, for example when using pinhole cameras and finding the position of an image in a mirror. They
are also familiar with the term in photography a…

Filed Under: RSS Füüsikaharidus

Phonocardiography with a smartphone

20.01.2017 by Kaido Reivelt

When a stethoscope is placed on the chest over the heart, sounds coming from the heart can be
directly heard. These sound vibrations can be captured through a microphone and the electrical
signals from the transducer can be processed and plotted in a…

Filed Under: RSS Füüsikaharidus

Public to Choose Jupiter Picture Sites for NASA Juno

19.01.2017 by Kaido Reivelt

For the first time, the public can vote on which pictures the spacecraft’s JunoCam imager takes of Jupiter.

Filed Under: RSS Kosmos

Public to Choose Jupiter Picture Sites for NASA Juno

19.01.2017 by Kaido Reivelt

For the first time, the public can vote on which pictures the spacecraft’s JunoCam imager takes of Jupiter.

Filed Under: RSS Kosmos

Franson Interference Generated by a Two-Level System

19.01.2017 by Kaido Reivelt

Author(s): M. Peiris, K. Konthasinghe, and A. MullerTime-energy correlated photon pairs are generated with scattered light from a frequency filtered, resonantly driven quantum dot.[Phys. Rev. Lett. 118, 030501] Published Thu Jan 19, 2017

Filed Under: RSS Teadus

Probing Intermolecular Coupled Vibrations between Two Molecules

19.01.2017 by Kaido Reivelt

Author(s): Zhumin Han (韩竹敏), Gregory Czap, Chen Xu (徐晨), Chi-lun Chiang (蔣季倫), Dingwang Yuan (袁定旺), Ruqian Wu, and W. Ho

Using a scanning tunneling microscope, researchers detect coupled vibrations between two molecules.


[Phys. Rev. Lett. 118, 036801] Published Thu Jan 19, 2017

Filed Under: RSS Teadus

Abnormal Elasticity of Single-Crystal Magnesiosiderite across the Spin Transition in Earth’s Lower Mantle

19.01.2017 by Kaido Reivelt

Author(s): Suyu Fu, Jing Yang, and Jung-Fu Lin

Measurements of the elastic constants of magnesiosiderite at room temperature and pressures up to 70 GPa show changes in the shear and compressive stress moduli around the material’s spin transition.


[Phys. Rev. Lett. 118, 036402] Published Thu Jan 19, 2017

Filed Under: RSS Teadus

Franson Interference Generated by a Two-Level System

19.01.2017 by Kaido Reivelt

Author(s): M. Peiris, K. Konthasinghe, and A. MullerTime-energy correlated photon pairs are generated with scattered light from a frequency filtered, resonantly driven quantum dot.[Phys. Rev. Lett. 118, 030501] Published Thu Jan 19, 2017

Filed Under: RSS Teadus

Probing Intermolecular Coupled Vibrations between Two Molecules

19.01.2017 by Kaido Reivelt

Author(s): Zhumin Han (韩竹敏), Gregory Czap, Chen Xu (徐晨), Chi-lun Chiang (蔣季倫), Dingwang Yuan (袁定旺), Ruqian Wu, and W. Ho

Using a scanning tunneling microscope, researchers detect coupled vibrations between two molecules.


[Phys. Rev. Lett. 118, 036801] Published Thu Jan 19, 2017

Filed Under: RSS Teadus

Abnormal Elasticity of Single-Crystal Magnesiosiderite across the Spin Transition in Earth’s Lower Mantle

19.01.2017 by Kaido Reivelt

Author(s): Suyu Fu, Jing Yang, and Jung-Fu Lin

Measurements of the elastic constants of magnesiosiderite at room temperature and pressures up to 70 GPa show changes in the shear and compressive stress moduli around the material’s spin transition.


[Phys. Rev. Lett. 118, 036402] Published Thu Jan 19, 2017

Filed Under: RSS Teadus

Earth from Space

19.01.2017 by Kaido Reivelt


Join us Friday, 20 January, at 10:00 CET for the ‘Earth from Space’ video programme. This week features a Sentinel-2 image of Hawaii’s Big Island

Filed Under: RSS Kosmos

Curiosity examines possible mud cracks on Mars

19.01.2017 by Kaido Reivelt

Evidence of mud means previous evidence of water on the Red Planet

Filed Under: RSS Kosmos

Laboratory model of the cardiovascular system for experimental demonstration of pulse wave propagation

19.01.2017 by Kaido Reivelt

The velocity by which a disturbance moves through the medium is the wave velocity. Pulse wave
velocity is among the key parameters in hemodynamics. Investigation of wave propagation through the
fluid-filled elastic tube has a great importance for the…

Filed Under: RSS Füüsikaharidus

The monster sound pipe

19.01.2017 by Kaido Reivelt

Producing a deep bass tone by striking a large 3 m (10 ft) flexible corrugated drainage pipe
immediately grabs student attention. The fundamental pitch of the corrugated tube is found to be a
semitone lower than a non-corrugated smooth pipe of the sa…

Filed Under: RSS Füüsikaharidus

A ball pool model to illustrate Higgs physics to the public

19.01.2017 by Kaido Reivelt

A simple model is presented to explain Higgs boson physics to the grand public. The model consists
of a children’s ball pool representing a Universe filled with a certain amount of the Higgs field.
The model is suitable for usage as a hands-on tool…

Filed Under: RSS Füüsikaharidus

Laboratory model of the cardiovascular system for experimental demonstration of pulse wave propagation

19.01.2017 by Kaido Reivelt

The velocity by which a disturbance moves through the medium is the wave velocity. Pulse wave
velocity is among the key parameters in hemodynamics. Investigation of wave propagation through the
fluid-filled elastic tube has a great importance for the…

Filed Under: RSS Füüsikaharidus

Holography of the Dirac Fluid in Graphene with Two Currents

18.01.2017 by Kaido Reivelt

Author(s): Yunseok Seo, Geunho Song, Philip Kim, Subir Sachdev, and Sang-Jin SinA holographic model is proposed for a strongly coupled Dirac fluid that describes graphene near charge neutrality.[Phys. Rev. Lett. 118, 036601] Published Wed Jan 18, 2017

Filed Under: RSS Teadus

Discrete Time Crystals: Rigidity, Criticality, and Realizations

18.01.2017 by Kaido Reivelt

Author(s): N. Y. Yao, A. C. Potter, I.-D. Potirniche, and A. Vishwanath

A detailed theoretical recipe for making time crystals has been unveiled and swiftly implemented by two groups using vastly different experimental systems.


[Phys. Rev. Lett. 118, 030401] Published Wed Jan 18, 2017

Filed Under: RSS Teadus

Are There Signatures of Harmonic Oscillator Shells Far from Stability? First Spectroscopy of ^{110} Zr

18.01.2017 by Kaido Reivelt

Author(s): N. Paul et al.Spectroscopy measurements of two nominally magic-number isotopes that lie near the neutron dripline show that neither isotope exhibits the states expected for a magic nucleus, challenging existing nuclear shell models.[Phys. Re…

Filed Under: RSS Teadus

Interaction of Ultraintense Laser Vortices with Plasma Mirrors

18.01.2017 by Kaido Reivelt

Author(s): A. Denoeud, L. Chopineau, A. Leblanc, and F. Quéré

Laser vortex beams can exchange their optical angular momentum with a plasma from which they are reflected.


[Phys. Rev. Lett. 118, 033902] Published Wed Jan 18, 2017

Filed Under: RSS Teadus

« Previous Page
Next Page »

Copyright © 2026 · Eesti Füüsika Selts · Log in