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A fluorite crystal containing atoms of the radioactive substance thorium-229, which was used to precisely measure the absorption spectrum of atomic nuclei at the PTB institute in Braunschweig, Germany. Previously, researchers had to capture several atomic nuclei in each experiment and test them with a single radiation frequency, which took a long time to achieve accurate measurements. The PTB measurement used a crystal in which about a quadrillion (a thousand trillion) atoms are embedded, allowing many tests to be performed simultaneously using precise laser beams. Credit: PTB

The dark side of time: A nuclear clock may reveal dark matter

A nuclear clock is the next big promise in measurement. Weizmann Institute of Science scientists have devised a method that allows us to harness tomorrow's technology to search for dark matter today.
time travel. Illustration: depositphotos.com

Exploring the reality of time travel: science fact versus science fiction

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While Einstein's theory of relativity shows the relationship between time and speed. Theoretical ideas such as wormholes offer possible methods, but practical challenges and paradoxes, such as the "grandfather paradox", complicate the feasibility of
Galileo's pendulum. Image: depositphotos.com

Things that Yarom knows: how does time fly when you're having fun?

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C wonders: How is it that time sometimes stands still and sometimes it runs?
Measuring minutes and seconds. Illustration: depositphotos.com

measure the time

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the alternating definitions of the second

Futuristic transportation - the speed of light 1: solutions in science fiction

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Professor Asher Yaholom, Department of Electrical and Electronics Engineering, Faculty of Engineering, Ariel University in Samaria * The article was published in Issue 7 of the Cultural Affairs Journal - correct
A spaceship leaves the galaxy. Illustration: depositphotos.com

Futuristic transportation - the speed of light 2: do the laws of physics allow it

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The first video of a time crystal

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In a joint study by researchers from Germany and Poland, a time crystal in action was filmed for the first time. The micrometer crystal consists of mechanisms at room temperature. With the help of X-ray radiation, the researchers from Berlin recorded the magnetization of the crystal over time and recorded it
Time crawls slowly. Illustration: depositphotos.com

A philosophical idea that can help us understand why time crawls slowly during the corona epidemic

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Many people feel that their experience of time has been a bit problematic this year. Although the clocks are ticking as they should, days stretch and months seem to drag on forever. We all know there are 60 seconds
Time managment. Illustration: depositphotos.com

Things that Yoram knows: why are there 24 hours in a day and who decided what time it is?

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The day is divided into two dozen hours because the hour was born even before the decimal system defeated the competing base 12. The fixed hour is a relatively new invention

Things that Yoram knows: challah, candles and guillotines - alternative Shavuot

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speed of light. Illustration: shutterstock

340 years to determine the speed of light

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Michael J. Fox, Doc Brown and the DeLorean used as a time machine

Fasten your belts, take off for the future...

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A summary of the history of time travel

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Stonehenge site in the UK. Close-up shot. Photography" shutterstock

Really cool

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XNUMXD illustration of a wormhole emerging from the black hole

Does time inside black holes move backwards?

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A rare hour. The earth slows down and so occasionally it is necessary to add a second to the year to coordinate the real time with the coordinated universe time set by an atomic clock. Photo: shutterstock

Why was June 30 a second long?

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parallel universes. Illustration: shutterstock

Was a mirror universe created during the big bang that moves backwards in time?

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time traveler Illustration: shutterstock

Time travel - the cognitive paradox

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The big chip on which the teleportation experiment was performed. Photo: ETH Institute in Switzerland.

Researchers in Switzerland have teleported, but only electronic data

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Anton Zelinger from the Institute for Quantum Optics and Quantum Information at the University of Vienna receives Einstein's paper on relativity from Prof. Hanoch Guttfreund. Photo: Dr. Gali Weinstein

Quantum philosophy part II. Asher Peres' paradox: does the future cause the past?

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Christopher Lloyd as Doc Brown, the inventor of the time machine in "Back to the Future". PR photo

Quantum Philosophy: Time Travel, Time Teleportation, and Schrödinger's Cat Resurrected

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A time capsule buried in an observatory. From Wikipedia

The time crystals will protect us from the death of the universe

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Back to the Future movie poster, starring Michael J. Fox. flying car

Finally - time travel is not possible

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Guess who it is

Happy birthday Einstein: Is it possible to sense the lengthening of time from Einstein's theory of relativity?

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NIST scientists compared a pair of the finest atomic clocks available to prove that indeed, as relativity predicts, going up a flight of stairs accelerates your aging. Figure courtesy of NIST

A pair of aluminum atomic clocks verify Einstein's twin paradox and time dilation

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The cover of Mi'zio Kaku's book The Physics of the Impossible. Aryeh Nir Publishing House 2010

The introductory chapter to Professor Michio Kaku's book - The Physics of the Impossible

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time travel. Illustration: shutterstock

Hawking: Time travel is possible but only into the future

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Dr. Gilad Perez - rabbi of the universe

The weakness of the weak force

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Clockwork from the Museum of Life in Burgundy, France. Courtesy of Wikipedia

See you in ten thousand years

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The failures at the particle accelerator in Geneva, the LHC were not caused by the impact of the future

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Shorter, faster

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The loneliness of the time traveler

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The mysteries of reverse time

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Will there be a fifth dimension?

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

This year will be long in one second

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Einstein assumed in his equations that time exists, now an Israeli physicist also explains why

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Kill the grandfather, and stay alive: on the paradoxes of time travel

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Forget black holes, now the task is to find wormholes

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

There is no probability, every action takes place in a parallel universe

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Fast, simple and ingenious

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Technion researchers have developed an innovative theoretical model of a time machine

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time traveler Illustration: shutterstock

Time in a side view

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Christopher Lloyd as Doc Brown, the inventor of the time machine in "Back to the Future". PR photo

The complete guide for the time traveler

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Researchers have measured the smallest time difference so far

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The last minute of 2005 will last 61 seconds

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

A new quantum model allows time travel

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

50 years of the atomic clock

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Why time may move in one direction…

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

Paradoxes of time travel

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Cosmic scene with DNA, stars, solvents and atomic circles in oral flow.

The arrow of time and the Archimedes point are new directions for the physics of time

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