Questions tagged [physics]
Use this tag for questions about the physical nature of reality and in particular claims that are strictly about the field of physics. Please use specific tags if the question is about other sciences such as chemistry. Also consider to add [electromagnetism] and [radiation] if appropriate.
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Do modern nuclear weapons produce no nuclear fallout?
Neil deGrasse Tyson says nuclear bombs no longer produce fallout.
From the video Neil deGrasse Tyson: modern hydrogen nuclear weapons don’t have the radiation fallout problem of WW2:
“Modern nukes ...
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Do fluctuations in Earth's magnetic field cause health problems? [closed]
CLAIM: Magnetic fluctuations caused by solar flares, known as "geomagnetic storms", cause health problems in humans.
Several studies have come out in an field known as "heliobiology&...
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Can some people beat roulette wheels using "visual ballistics"?
In the past, people beat roulette wheels using machines that measure ball speed and predict where the ball will land. That is discussed in the question Is it possible to gain an edge in roulette ...
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Did Richard Feynman say that if all of mathematics disappeared, physics would be set back by exactly one week?
The following quip is often attributed to the physicist Richard Feynman:
If all of mathematics disappeared, physics would be set back by exactly one week.
See for example Quote Master, quotefancy, ...
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Do antistatic car-straps reduce static shocks from cars?
There is a line of anti-static rubber straps sold for cars which attach to the chassis of the car and dangle down to the road. It is claimed that they allow static electricity to drain off, preventing ...
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Has a room-temperature ambient-pressure superconductor been synthesized? [closed]
On July 22nd, 2023, a preprint paper, The First Room-Temperature Ambient-Pressure Superconductor was submitted to arxiv.
It has the potential to be the most groundbreaking discovery of the 21st ...
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In the event of a siren warning the public of a gas leak, is it actually advisable to listen to the radio when smelling gas?
The Finnish website pelastustoimi advises to listen to the radio in the event of smelling gas.
If you are already indoors and smell gas
put a wet cloth in front of your mouth and breathe through it
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Does rotating a soda can on a table prevent it from fizzing over when opened?
In this scene from Season 6 Episode 7 of Better Call Saul, the character Howard Hamlin shows that one can stop a shaken soda can from exploding when opened by first rotating it vertically while it is ...
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Did Richard Feynman say that anyone who claims to understand quantum physics is lying or crazy?
Theoretical physicist, Richard Feynman is often attributed with the quote
Anyone who claims to understand quantum theory is either lying or crazy.
Example of the claim.
Is this apocryphal, or did ...
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Can we determine for sure if the Sun revolves around the Earth?
Rabbi Menachem Mendel Schneerson was the most recent (and final) rebbe of Chabad.
In 1975 he published a series of correspondence with a scientist about whether the Sun revolves around the Earth and ...
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Was an invisible electrostatic wall generated at a plastic tape factory in August 1980?
Amasci.com reported in 1996:
David Swenson of 3M Corporation describes an anomaly where workers encountered a strange "invisible wall" in the area under a fast-moving sheet of electrically ...
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Is there any possibility that CERN's Large Hadron Collider run 3 can be devastating?
When I was a kid, there was a lot of discussion on electronic media channels that the run of CERN's Large Hadron Collider would lead to black holes. At that time, the president of India, APJ Abdul ...
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Has Newton's Third Law of motion been "debunked" and are there discrepancies in formulas of variation of mass with velocity?
An Indian "scientist" who is called Ajay Sharma, allegedly found proof that Newton's Third Law of motion isn't applicable to every situation, and therefore it's declared false, or at least ...
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Is the Glitch In the Matrix subreddit on Reddit real stories? [closed]
Here is the subreddit
reddit.com/r/glitch_in_the_matrix
Here is a fairly recent example of a story posted to that subreddit
https://www.reddit.com/r/Glitch_in_the_Matrix/comments/qdainf/...
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Does Reversing Ceiling Fan Direction Improve Energy Efficiency?
There is an often cited statistic in the HVAC field that reversing the ceiling fan direction can save 10% on heating bills due to air circulation.
I would imagine that this is somewhat true due to the ...
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