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One ring to bind them

27.07.2016 by Kaido Reivelt

Technology image of the week: a docking ring for joining ESA’s ATV space truck to the International Space Station goes on show at ESA’s technical heart

Filed Under: RSS Kosmos

The Case of the Missing Ceres Craters

26.07.2016 by Kaido Reivelt

Scientists with NASA’s Dawn mission have found that, surprisingly, Ceres lacks any truly large impact basins.

Filed Under: RSS Kosmos

The Case of the Missing Ceres Craters

26.07.2016 by Kaido Reivelt

Scientists with NASA’s Dawn mission have found that, surprisingly, Ceres lacks any truly large impact basins.

Filed Under: RSS Kosmos

CryoSat sets new standard for measuring sea levels

26.07.2016 by Kaido Reivelt

Trying to measure sea levels around rugged coastlines is not always an easy task. ESA’s CryoSat satellite is making a difference with its radar altimeter.

Filed Under: RSS Kosmos

Kickstarter provides a way to save the Pluto Discovery Telescope

26.07.2016 by Kaido Reivelt

Help preserve the 13-inch telescope that Clyde Tombaugh used to find the dwarf planet Pluto.

Filed Under: RSS Kosmos

The case of the missing large craters on Ceres

26.07.2016 by Kaido Reivelt

The dwarf planet Ceres has a lack of large craters where there should be many.

Filed Under: RSS Kosmos

Philae prepares to take its eternal rest

26.07.2016 by Kaido Reivelt

ESA plans on shutting down communication attempts with the ill-fated comet lander.

Filed Under: RSS Kosmos

Gravitational vortex detected around black hole

25.07.2016 by Kaido Reivelt

X-rays from iron tell the tale of swirling space-time.

Filed Under: RSS Kosmos

Evidence of Strong Proton Shape Fluctuations from Incoherent Diffraction

25.07.2016 by Kaido Reivelt

Author(s): Heikki Mäntysaari and Björn Schenke

Improved models of gluon fluctuations within protons have been developed and applied to particle collision data, pointing to strong gluon fluctuations at high energies.


[Phys. Rev. Lett. 117, 052301] Published Mon Jul 25, 2016

Filed Under: RSS Teadus

Making for Mercury

25.07.2016 by Kaido Reivelt

Tales from the Materials and Electrical Component Lab: this video covers the selection of materials for ESA’s mission around the innermost planet

Filed Under: RSS Kosmos

Meandering Moon feature

25.07.2016 by Kaido Reivelt

Space science image of the week: Hadley Rille could be an ancient channel that once carried lava across the Moon

Filed Under: RSS Kosmos

This exoplanet system has tightly packed planets in ultra-precise orbits

25.07.2016 by Kaido Reivelt

A Florida Institute of Technology student helps uncover the strange behavior of the Kepler-80 system.

Filed Under: RSS Kosmos

How a weird Mars rock may be solid proof of an ancient oxygen atmosphere

25.07.2016 by Kaido Reivelt

When researchers found a compound that shouldn’t have been there, it revealed a missing piece of Mars’ history.

Filed Under: RSS Kosmos

Nagu virvatuluke

25.07.2016 by Kaido Reivelt

Paremalt, läbi metallist toru, tuleb infrapuna (ja seega silmale nähtamatu) laseri kiir. See kiir koondub väikeseks täpiks ja tekitab õhu molekulidest plasma. Plasma omakorda kiirgab valget, suunatud valgust. Foto: Zhijun Xu, Nankai Ülikool.

Filed Under: Päevapilt, Uncategorized

Measuring g using a rotating liquid mirror: enhancing laboratory learning

25.07.2016 by Kaido Reivelt

We describe a low-cost yet experimentally challenging method to measure the acceleration of gravity,
g , using a liquid in a rotating bowl and a laser pointer. The idea underpinning this novel method
is that the rotating liquid surface will form a pa…

Filed Under: RSS Füüsikaharidus

Week In Images

22.07.2016 by Kaido Reivelt

Our week through the lens: 18-22 July 2016

Filed Under: RSS Kosmos

Another dark matter search comes up empty

22.07.2016 by Kaido Reivelt

The Large Underground Xenon (LUX) dark matter experiment has found no traces of dark matter.

Filed Under: RSS Kosmos

JAXA may remake its X-ray observatory Hitomi for a 2020 launch

22.07.2016 by Kaido Reivelt

The spacecraft tumbled out of control shortly after first light earlier this year.

Filed Under: RSS Kosmos

Gamification: using elements of video games to improve engagement in an undergraduate physics class

22.07.2016 by Kaido Reivelt

Gamification has been extensively implemented and studied in corporate settings and has proven to be
more effective than traditional employee-training programs, however, few classroom studies of
gamification have been reported in the literature. Our …

Filed Under: RSS Füüsikaharidus

Historical Records Miss a Fifth of Global Warming: NASA

21.07.2016 by Kaido Reivelt

A new NASA-led study finds that almost one-fifth of the global warming that has occurred in the past 150 years has been missed by historical records due to quirks in how global temperatures were recorded.

Filed Under: RSS Kosmos

Historical Records Miss a Fifth of Global Warming: NASA

21.07.2016 by Kaido Reivelt

A new NASA-led study finds that almost one-fifth of the global warming that has occurred in the past 150 years has been missed by historical records due to quirks in how global temperatures were recorded.

Filed Under: RSS Kosmos

NASA Mars Rover Can Choose Laser Targets on Its Own

21.07.2016 by Kaido Reivelt

NASA’s Mars rover Curiosity is using onboard software to select rocks to zap with its laser spectrometer and to autonomously point the instrument at the targets.

Filed Under: RSS Kosmos

NASA Mars Rover Can Choose Laser Targets on Its Own

21.07.2016 by Kaido Reivelt

NASA’s Mars rover Curiosity is using onboard software to select rocks to zap with its laser spectrometer and to autonomously point the instrument at the targets.

Filed Under: RSS Kosmos

ExoMars/TGO hangout

21.07.2016 by Kaido Reivelt


Join us on 26 July for a Google hangout with updates and Q&A with ESA experts and scientists focusing on the crucial milestones during the spacecraft’s seven-month cruise to the Red Planet

Filed Under: RSS Kosmos

Return to the underwater Space Station

21.07.2016 by Kaido Reivelt

This year, NASA’s underwater training mission for astronauts promises to be longer and better than ever. Starting on 21 July, space agencies will test technologies and research international crew behaviour for long-duration missions using a permanent underwater base off the coast of Florida.

Filed Under: RSS Kosmos

Earth from Space

21.07.2016 by Kaido Reivelt


Join us Friday, 22 July, at 10:00 CEST for the ‘Earth from Space’ video programme. This week features a Sentinel-2A image of Tonga’s Tongatapu island

Filed Under: RSS Kosmos

Mars navigation

21.07.2016 by Kaido Reivelt


Operations image of the week: ESA is using quasars – some of the Universe’s most enigmatic objects – to perform ultraprecise navigation for ExoMars

Filed Under: RSS Kosmos

Kepler hauls in 100 new planets in its phoenix-like new mission

21.07.2016 by Kaido Reivelt

The new haul includes four Earth-like planets in one solar system

Filed Under: RSS Kosmos

Here’s your chance to see inside the Apollo 11 Command Module

21.07.2016 by Kaido Reivelt

The Smithsonian releases an interactive 3-D model of the home of the Apollo 11 astronauts.

Filed Under: RSS Kosmos

Planetary scientists used a rare conjunction to hunt for habitability on two promising exoplanets

21.07.2016 by Kaido Reivelt

The TRAPPIST-1 system may have three habitable planets. Now we know a little more about two of them.

Filed Under: RSS Kosmos

Shakedown test

20.07.2016 by Kaido Reivelt

Technology image of the week: shaker testing of a radiator panel to ensure hard-working telecommunication satellites keep their cool in space

Filed Under: RSS Kosmos

The Moon still carries the scars from an ancient protoplanet impact

20.07.2016 by Kaido Reivelt

A larger-than-believed object carved a mark on the Imbrium Sculpture region.

Filed Under: RSS Kosmos

What the man who first looked for microbes on Mars has to say about the Viking anniversary

20.07.2016 by Kaido Reivelt

Gilbert Levin directed one of the microbiology experiments. 40 years later, here’s what he has to say.

Filed Under: RSS Kosmos

Dragon chase

20.07.2016 by Kaido Reivelt

The SpaceX Dragon CRS-9 cargo vessel seen chasing the International Space Station from Leiden, The Netherlands, just a few hours before this morning’s berthing.

Filed Under: RSS Kosmos

Integral equations for the electromagnetic field in dielectrics

20.07.2016 by Kaido Reivelt

We study static the electric field and electromagnetic waves in dielectric media. In contrast to the
standard approach, we use, formulate and solve integral equations for the field. We discuss the case
of an electrostatic field of a point charge plac…

Filed Under: RSS Füüsikaharidus

Facilitating conceptual change in students’ understanding of concepts related to pressure

20.07.2016 by Kaido Reivelt

The aim of this research was to explore the effects of three different types of methods of learning
physics (conceptual change-based, real life context-based and traditional learning) on high school
physics students in the 11th grade in terms of conc…

Filed Under: RSS Füüsikaharidus

The biomechanics of solids and fluids: the physics of life

20.07.2016 by Kaido Reivelt

Biomechanics borrows and extends engineering techniques to study the mechanical properties of
organisms and their environments. Like physicists and engineers, biomechanics researchers tend to
specialize on either fluids or solids (but some do both). …

Filed Under: RSS Füüsikaharidus

Applying classical geometry intuition to quantum spin

20.07.2016 by Kaido Reivelt

Using concepts of geometric orthogonality and linear independence, we logically deduce the form of
the Pauli spin matrices and the relationships between the three spatially orthogonal basis sets of
the spin-1/2 system. Rather than a mathematically ri…

Filed Under: RSS Füüsikaharidus

Surveying college introductory physics students’ attitudes and approaches to problem solving

20.07.2016 by Kaido Reivelt

Students’ attitudes and approaches to problem solving in physics can greatly impact their actual
problem solving practices and also influence their motivation to learn and ultimately the
development of expertise. We developed and validated an attit…

Filed Under: RSS Füüsikaharidus

X Marks the Spot for Milky Way Formation

19.07.2016 by Kaido Reivelt

A new understanding of our galaxy’s structure began in an unlikely way: on Twitter.

Filed Under: RSS Kosmos

X Marks the Spot for Milky Way Formation

19.07.2016 by Kaido Reivelt

A new understanding of our galaxy’s structure began in an unlikely way: on Twitter.

Filed Under: RSS Kosmos

Water Dielectric Effects in Planar Confinement

19.07.2016 by Kaido Reivelt

Author(s): Alexander Schlaich, Ernst W. Knapp, and Roland R. NetzMolecular dynamics simulations indicate that the dielectric constant of water may dramatically change when the liquid is confined between two surfaces.[Phys. Rev. Lett. 117, 048001] Publi…

Filed Under: RSS Teadus

Making for space

19.07.2016 by Kaido Reivelt

ESA’s new Advanced Manufacturing Lab will probe the application of 3D printing and other advanced manufacturing techniques for future space missions

Filed Under: RSS Kosmos

Active tracking of astronaut rad-exposures targeted

19.07.2016 by Kaido Reivelt

Radiation is an invisible hazard of spaceflight, but a new monitoring system for ESA astronauts gives a realtime snapshot of their exposure. The results will guide researchers preparing for deep-space missions to come.

Filed Under: RSS Kosmos

How astronomers used Twitter to understand our galaxy

19.07.2016 by Kaido Reivelt

A collaborative effort led to the discovery of an X-shaped bulge.

Filed Under: RSS Kosmos

Here’s why we can’t just rocket nuclear waste into the sun

19.07.2016 by Kaido Reivelt

Orbital mechanics, ruining your dreams for 13.5 billion years.

Filed Under: RSS Kosmos

The largest radio telescope in the southern hemisphere returns its first image

19.07.2016 by Kaido Reivelt

South Africa’s MeerKAT telescope is still under construction, but ready to return valuable scientific information.

Filed Under: RSS Kosmos

Here are NASA’s near-future plans for our solar system

19.07.2016 by Kaido Reivelt

Giant space telescopes, continued exploration of Mars, and an eye towards Jupiter’s moons mark an exciting roadmap for the agency’s future.

Filed Under: RSS Kosmos

NASA Scientists to Discuss 2016 Climate Trends, Impacts

18.07.2016 by Kaido Reivelt

NASA climate experts will discuss recent trends in global temperatures and Arctic sea ice, plus research to better understand their impacts, on a July 19 media telecon.

Filed Under: RSS Kosmos

NASA’s Kepler Confirms 100+ Exoplanets During Its K2 Mission

18.07.2016 by Kaido Reivelt

An international team of astronomers has discovered and confirmed a treasure trove of new worlds using NASA’s Kepler spacecraft on its K2 mission.

Filed Under: RSS Kosmos

NASA Selects Five Mars Orbiter Concept Studies

18.07.2016 by Kaido Reivelt

NASA has selected five U.S. aerospace companies to conduct concept studies for a potential future Mars orbiter mission.

Filed Under: RSS Kosmos

What lies beneath

18.07.2016 by Kaido Reivelt


ESA’s Venus Express reveals details on Venus’ surface by studying patterns of clouds in its thick atmosphere

Filed Under: RSS Kosmos

Nameless and ancient

18.07.2016 by Kaido Reivelt


Space Science Image of the Week: Ancient areas of Mars are peppered with impact craters similar to this unnamed pit in Noachis Terra, viewed by ESA’s Mars Express

Filed Under: RSS Kosmos

How Venus’ cold cloud layers can reveal the world below

18.07.2016 by Kaido Reivelt

Wind movements could provide subtle clues to what’s going on below.

Filed Under: RSS Kosmos

Chilly summer for Sentinel-2B

18.07.2016 by Kaido Reivelt

While most of us may be looking forward to spending some time in the sunshine this summer, the Sentinel-2B satellite is being subjected to the extreme cold of space to make sure it is fit for life in orbit.

Filed Under: RSS Kosmos

Comment on ‘From the pinhole camera to the shape of a lens: the camera-obscura reloaded’

18.07.2016 by Kaido Reivelt

In the article ‘From the pinhole camera to the shape of a lens: the camera-obscura reloaded’ ( Phys.
Educ . 50 [http://dx.doi.org/10.1088/0031-9120/50/6/706] 706
[http://dx.doi.org/10.1088/0031-9120/50/6/706] ), the authors show that a prism arra…

Filed Under: RSS Füüsikaharidus

Modelling of a collision between two smartphones

18.07.2016 by Kaido Reivelt

In the predominant approach in physics textbooks, the collision between particles is treated as a
black box, where no physical quantity can be measured. This approach becomes even more evident in
experimental classes where collisions are the simplest…

Filed Under: RSS Füüsikaharidus

NASA Sails Full-Speed Ahead in Solar System Exploration

15.07.2016 by Kaido Reivelt

With NASA’s Juno poised to study Jupiter’s origins, NASA continues to explore our solar system to help answer questions about our origins and future and whether we are alone.

Filed Under: RSS Kosmos

NASA’s Next Mars Rover Progresses Toward 2020 Launch

15.07.2016 by Kaido Reivelt

After an extensive review process, NASA is ready to proceed with final design and construction of its next Mars rover, currently targeted to launch in summer of 2020 and arrive on Mars in February 2021.

Filed Under: RSS Kosmos

Many planets ripe for life may be doomed by billions of years of violent collisions

15.07.2016 by Kaido Reivelt

Crashing planets means bad news for evolving life.

Filed Under: RSS Kosmos

Detection of Zeptojoule Microwave Pulses Using Electrothermal Feedback in Proximity-Induced Josephson Junctions

15.07.2016 by Kaido Reivelt

Author(s): J. Govenius, R. E. Lake, K. Y. Tan, and M. Möttönen

A new technique detects as few as 200 microwave photons at a time by the heat they supply to an electrical circuit.


[Phys. Rev. Lett. 117, 030802] Published Fri Jul 15, 2016

Filed Under: RSS Teadus

Week In Images

15.07.2016 by Kaido Reivelt

Our week through the lens: 11-15 July 2016

Filed Under: RSS Kosmos

Chandra witnesses the aftermath of a violent stellar merger

15.07.2016 by Kaido Reivelt

Although Gammy-ray bursts are the most luminous explosions in the universe, a new study shows that scientists may be missing a majority of these powerful cosmic detonations.

Filed Under: RSS Kosmos

Bringing the magic of light to remote areas where resources are scarce: beautiful demonstrations of interference patterns using laser pens and fibres

15.07.2016 by Kaido Reivelt

The training of physics teachers in remote areas in the developing world requires dedicated trainers
(who typically are volunteers), as well as robust logistics. The latter must include the supply of
equipment for experiments in the classroom. This t…

Filed Under: RSS Füüsikaharidus

Corrigendum: Dynamics of a sliding ladder leaning against a wall (2015 Phys. Educ . 50 329–34)

15.07.2016 by Kaido Reivelt

Description unavailable

Filed Under: RSS Füüsikaharidus

Introducing electric fields

15.07.2016 by Kaido Reivelt

The clear introduction of basic concepts and definitions is crucial for teaching any topic in
physics. I have always found it difficult to teach fields. While searching for better explanations I
hit on an approach of reading foundational texts and el…

Filed Under: RSS Füüsikaharidus

NASA to Discuss Next Mars Rover on Facebook Live

14.07.2016 by Kaido Reivelt

NASA will host a Facebook Live event Friday, July 15 at 10 a.m. PDT, about NASA’s next Mars rover, Mars 2020, which is moving forward with final design and construction.

Filed Under: RSS Kosmos

Earth from Space

14.07.2016 by Kaido Reivelt


Join us Friday, 15 July, at 10:00 CEST for the ‘Earth from Space’ video programme. This week features a Sentinel-2A image of the Sundarbans, in Bangladesh

Filed Under: RSS Kosmos

Tim returns to the UK

14.07.2016 by Kaido Reivelt

ESA astronaut Tim Peake seen arriving back in the UK for the first time after his six-month Principia mission

Filed Under: RSS Kosmos

Astronomers mapped 1.2 million galaxies in a hunt for dark energy

14.07.2016 by Kaido Reivelt

Hundreds of astronomers have collaborated to make the largest three-dimensional map of galaxies on our universe.

Filed Under: RSS Kosmos

New Horizons celebrates a year since it flew past Pluto

14.07.2016 by Kaido Reivelt

Once a small, dim point of light, we now know it’s a fascinating, active world.

Filed Under: RSS Kosmos

Playing with a bulb lamp: RTL measurements and modelling

14.07.2016 by Kaido Reivelt

The electric, thermal and optical behaviour of an incandescent lamp was studied by a real time
laboratory (RTL) apparatus, using two voltage probes and a light probe. The software STELLA was used
to model the phenomena and to analyse the transient be…

Filed Under: RSS Füüsikaharidus

A Laplace transform approach to the reflection and transmission of electrons at semi-infinite potential barriers

14.07.2016 by Kaido Reivelt

The logic of the Schrödinger equation may be understood most readily by a consideration of a very
important class of problems, i.e. those of the transmission and reflection of electrons through
semi-infinite potential barriers. In this paper I revis…

Filed Under: RSS Füüsikaharidus

Europe’s workhorse Sentinel ready for action

13.07.2016 by Kaido Reivelt

Getting the bigger picture on the health of our planet drew another step closer today as Europe’s Sentinel-3A satellite was handed over to Eumetsat for operations.

Filed Under: RSS Kosmos

NASA captures the Moon crossing the face of the Earth, for the second time

13.07.2016 by Kaido Reivelt

For the second time in a year, a NASA camera has documented the moon traversing across the Earth.

Filed Under: RSS Kosmos

The first view of a water “snowline” in a protoplanetary disk

13.07.2016 by Kaido Reivelt

ALMA takes the first image of a water “snowline” around a star with a violent outburst.

Filed Under: RSS Kosmos

This is the first image Juno has sent back since it began orbiting Jupiter

13.07.2016 by Kaido Reivelt

On July 4th, Juno entered orbit. Now the JunoCam is on, and here’s its first post-orbit picture of the jovian system.

Filed Under: RSS Kosmos

Far-out Proba-3

13.07.2016 by Kaido Reivelt

Technology image of the week: ESA’s double-satellite Proba-3 will be going where no Proba minisatellite has gone before

Filed Under: RSS Kosmos

Fluid dynamics in porous media with Sailfish

13.07.2016 by Kaido Reivelt

In this work we show the application of Sailfish to the study of fluid dynamics in porous media.
Sailfish is an open-source software based on the lattice-Boltzmann method. This application of
computational fluid dynamics is of particular interest to …

Filed Under: RSS Füüsikaharidus

Low cost 3D-printing used in an undergraduate project: an integrating sphere for measurement of photoluminescence quantum yield

13.07.2016 by Kaido Reivelt

We report upon the exploitation of the latest 3D printing technologies to provide low-cost
instrumentation solutions, for use in an undergraduate level final-year project. The project
addresses prescient research issues in optoelectronics, which woul…

Filed Under: RSS Füüsikaharidus

NASA’s Juno Spacecraft Sends First In-orbit View

12.07.2016 by Kaido Reivelt

The JunoCam camera aboard NASA’s Juno mission is operational and sending down data after the spacecraft’s July 4 arrival at Jupiter.

Filed Under: RSS Kosmos

Black Hole Makes Material Wobble Around It

12.07.2016 by Kaido Reivelt

The European Space Agency’s orbiting X-ray observatory, XMM-Newton, has proved the existence of a “gravitational vortex” around a black hole.

Filed Under: RSS Kosmos

CryoSat reveals recent Greenland ice loss

12.07.2016 by Kaido Reivelt

In the most detailed picture to date, information from ESA’s CryoSat satellite reveals how melting ice in Greenland has recently contributed twice as much to sea-level rise as the prior two decades.

Filed Under: RSS Kosmos

A new look at the Orion Nebula nets a bevy of planetary-mass objects

12.07.2016 by Kaido Reivelt

Infrared images from ESO’s Very Large Telescope (VLT) reveal unanticipated low-mass objects.

Filed Under: RSS Kosmos

Some of the first supernovae may be looking a little blue

12.07.2016 by Kaido Reivelt

To find nebulae from the first supernovae, we need to look for blue lines.

Filed Under: RSS Kosmos

Was Juno the fastest spacecraft ever? Only kind of.

12.07.2016 by Kaido Reivelt

It all has to do with the point of view of the observer, in a sense.

Filed Under: RSS Kosmos

ESA commits to next stage of UK revolutionary rocket engine

12.07.2016 by Kaido Reivelt

The UK’s Farnborough airshow today saw ESA’s commitment to the next step in developing a revolutionary air-breathing rocket engine that could begin test firings in about four years.

Filed Under: RSS Kosmos

Comet cliffs

12.07.2016 by Kaido Reivelt

Space Science Image of the Week: The steep cliffs of the Hathor region pictured in a stunning view of Rosetta’s comet

Filed Under: RSS Kosmos

A new dwarf planet was found in a deep solar system sky survey

12.07.2016 by Kaido Reivelt

Orbiting beyond Neptune lies 2015 RR245, a newly discovered dwarf planet.

Filed Under: RSS Kosmos

Ancient gusts of cosmic radiation could have affected Earth’s biology

12.07.2016 by Kaido Reivelt

Prehistoric supernovae explosions may have played a role in the development of Earth’s biosphere.

Filed Under: RSS Kosmos

‘Frankenstein’ Galaxy Surprises Astronomers

11.07.2016 by Kaido Reivelt

About 250 million light-years away, there’s a neighborhood of our universe that astronomers had considered quiet and unremarkable.

Filed Under: RSS Kosmos

Astronomers find a freak Frankenstein galaxy made of parts of other galaxies

11.07.2016 by Kaido Reivelt

The unassuming galaxy turns out to have a lot of parts taken from galaxies that came before.

Filed Under: RSS Kosmos

Working with the nature of science in physics class: turning ‘ordinary’ classroom situations into nature of science learning situations

11.07.2016 by Kaido Reivelt

In the science education research field there is a large body of literature on the ‘nature of
science’ (NOS). NOS captures issues about what characterizes the research process as well as the
scientific knowledge. Here we, in line with a broad bod…

Filed Under: RSS Füüsikaharidus

Using Tracker to prove the simple harmonic motion equation

11.07.2016 by Kaido Reivelt

Simple harmonic motion (SHM) is a common topic for many students to study. Using the free, though
versatile, motion tracking software; Tracker , we can extend the students experience and show that
the general equation for SHM does lead to the correct…

Filed Under: RSS Füüsikaharidus

The Sky on Earth project: a synergy between formal and informal astronomy education

11.07.2016 by Kaido Reivelt

In this paper we present the Sky on Earth project funded in 2008 by the Italian Ministry of
Instruction, Research and University, inside its annual public outreach education program. The
project’s goal was to realise a stable and open-access astron…

Filed Under: RSS Füüsikaharidus

An axiomatic approach to Maxwell’s equations

11.07.2016 by Kaido Reivelt

This paper suggests an axiomatic approach to Maxwell’s equations. The basis of this approach is a
theorem formulated for two sets of functions localized in space and time. If each set satisfies a
continuity equation then the theorem provides an int…

Filed Under: RSS Füüsikaharidus

Erratum: Yet another encounter with the golden ratio: balancing laminar bodies on the edge (2016 Eur. J. Phys. 37 055001 [http://dx.doi.org/10.1088/0143-0807/37/5/055001] )

11.07.2016 by Kaido Reivelt

Description unavailable

Filed Under: RSS Füüsikaharidus

The Clifford algebra of physical space and Dirac theory

11.07.2016 by Kaido Reivelt

The claim found in many textbooks that the Dirac equation cannot be written solely in terms of Pauli
matrices is shown to not be completely true. It is only true as long as the term ##IMG##
[http://ej.iop.org/images/0143-0807/37/5/055407/ejpaa2c9bieq…

Filed Under: RSS Füüsikaharidus

Electromagnetic potentials basis for energy density and power flux

11.07.2016 by Kaido Reivelt

In rounding out the education of students in advanced courses in applied electromagnetics it is
incumbent on us as mentors to raise issues that encourage appreciation of certain subtle aspects
that are often overlooked during first exposure to the fi…

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Book Review – Networked Learning

8.07.2016 by Kaido Reivelt

Chris Jones book uniquely and thoroughly explores networked learning as a relational perspective between society, the individual learner, and most of the salient points in between. Everyone involved in higher education, should read and digest this book…

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