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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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Can a solid have a different melting point depending on the orientation of its surface with respect to its crystal lattice? [on hold]

I originally asked this question on Physics Stack Exchange than it got deleted and I now see that that type of question probably belongs here so I'm now asking it here. The real laws of our universe ...
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1answer
243 views

Does the Wowfixit screen protector harden phone screens?

The WOWFIXIT web-page offers a product where you wipe a liquid over your phone screen and polish it. They claim the result will make your protect your phone screen from scratches: One of the many ...
65
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1answer
8k views

Antistatic bracelet without a ground connection

Last winter in Japan, some of my friends were buying bracelets like this, that claim to prevent or reduce static shocks: Here is an advertisement picture describing how it is supposed to be used, ...
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0answers
431 views

Does this video show a sonic boom through a sun dog?

This YouTube video purports to be of a rocket launch from the Kennedy Space Center in 2010. It shows a rocket reaching the speed of sound, and creating a sonic boom at the same time as the rocket ...
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309 views

Does carrying or consuming onions help to prevent heatstroke and/or reduce your body temperature?

Will consuming onions help to reduce your body temperature, or prevent heatstroke? Some common variations of this claim include applying onion juice to your skin, or even just carrying an onion in ...
72
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1answer
11k views

Are the claims made by Indian Ministers / personalities regarding ancient Indian inventions true?

In the past couple of years, several Indian Ministers / personalities have made claims regarding existence of modern inventions in Ancient India. Prime Minister Modi claimed that genetic science ...
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1answer
2k views

Has the speed of light significantly slowed down over the past 6,000 years?

One of the problems for young-Earth creationism is that we are seeing light from stars more than 6,000 light-years away, which implies that those stars pre-date the alleged date of the creation. To ...
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1answer
545 views

Is the laser built in Măgurele, România, the most powerful in the world?

Some news websites, including Romanian and non-Romanian ones, claim that the laser built in Măgurele, România (which is going to be used starting today), is the most powerful (and in other sources the ...
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2answers
2k views

Did all iron on Earth come from the outer space?

According this video 9 Shocking Facts from the Quran! Iron is not natural to the Earth. It did not form on the Earth but came down to Earth from outer space. This may sound strange but it is true. ...
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1answer
479 views

What evidence would remain of the use of atomic/nuclear weapons 26,000 years ago? [closed]

In his 1998 book, Yellow Sky: an alternative perspective about the human condition and history, Kenneth Lipton argues that high radon levels in southeastern Pennsylvania may provide evidence of prior ...
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1answer
414 views

Is there compelling proof against an alternative to the law of conservation of energy? [closed]

The law of conservation of energy states that energy cannot be created or destroyed, but changed into different forms, which I've never found entirely compelling. It's impossible to measure the energy ...
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712 views

Did thirteenth century scholars attempt to determine the congealing of oil by reading Aristotle?

In "The Production of Knowledge" William Starbuck presents the following anecdote (without providing its source). Is this anecdote based on a real historically traceable incidence? During the ...
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1answer
503 views

Does each doubling of CO2 cause a 2-4°C increase?

Professor Henrik Svensmark argues that cosmic rays have a strong influence on cloud formation and hence climate change. In 2016 he predicted global warming was over. He was recently the lead author of ...
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359 views

Can gamma rays on an airplane damage a digital camera?

Rob Hummer gave a talk at Cine Gear Expo 2011 about how film and digital cameras catch light. He makes a handful of extraordinary claims about digital sensors - including a claim that you get dead ...
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1answer
12k views

“The Flat Earth Society has members all around the globe”?

When one googles "The Flat Earth Society has members all around the globe", many images appear. Some of them claim this is a post by the Flat Earth Society itself, such as this one: I wonder if this ...
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3answers
13k views

Does plutonium exist in the world, apart from being manufactured?

In reference to the Manhattan Project at Los Alamos, a mathematician, Peter Lax, described his time working there as "living science fiction". He said: we were told essentially the basic thing: ...
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1answer
1k views

Does grabbing a fidget spinner in zero G cause your body to tumble rapidly?

Techly have posted a video they attribute to NASA. It shows ISS astronauts looking at a fidget spinner floating in space and grabbing it. After a jump-cut, they are shown tumbling (rotating along all ...
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1answer
624 views

Electro-osmotic pump to keep bunker dry

Supposedly the latest tech in keeping water out of (historically significant) bunkers is electro-osmotic pulse technology. EOP is based on the principle of electro-osmosis—the movement of a liquid ...
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0answers
173 views

Is there any scientific basis to this “catalytic converter” to treat hard water?

I came across this product called Softer Water Conditioners. It includes a lot of scientific sounding mumbo-jumbo to explain how it works, which raises my skepticism. Is there any scientific basis to ...
7
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1answer
660 views

Did an apple falling on Newton's head help him build his theory of gravity?

The popular belief goes like this: Isaac Newton was sitting in his garden under a tree when an apple falls on his head, and suddenly he came up with his theory of gravity. Did this event really ...
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463 views

Speed of light not constant as measured by many scientific / research groups, but averaged & politically standardized? [closed]

In banned/ removed TEDxTalk, The Science Delusion - Rupert Sheldrake at TEDx Whitechapel, the speaker has talked about various things but I am focused on the "constants" such as "light" that he has ...
27
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1answer
7k views

Did a lightning strike make a river roll and boil?

There's a video that I just came across on Facebook: original source: http://www.youtube.com/watch?v=TD2hyCUePL0 alternative copy: https://www.facebook.com/hardbond/videos/10155610316509339/ In the ...
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1answer
950 views

Did Israel install cameras that can see through clothing on the Temple Mount?

In this article Salah Abu Agrafa, a worshipper at the Temple Mount claims: “They took away the metal detectors, but they replaced them with X-ray cameras that can look at our women naked.” ...
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378 views

Does one kg of rock contain more energy in the form of U-238 than one kg of petroleum? [closed]

Let's consider rock and petroleum. Which contains more energy per kilogram? Due to Einstein, we know mass is energy, and the energy contents of both are equivalent. However, let's forget this and ...
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1answer
855 views

Does charging a phone use the same power as a washing machine? [closed]

I heard that charging a phone is the same as running a washing machine in terms of electricity but from what I understand a typical phone charger uses ~5W whereas a washing machine is near ~500W. ...
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1answer
476 views

Do cellphones pose any harm to pacemaker users?

In Japan it is very common to see signs on trains that encourage/require you to turn off your phone on trains, or just near the priority seating areas. The thinking goes that the signals somehow ...
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0answers
256 views

Would a full scale Thermonuclear War create centuries of Nuclear Winter? [duplicate]

I see the nuclear winter lots of times in Sci-Fi materials. The Matrix is a famous example. Lots of people believe in this nuclear winter thing. In real world, would a full scale Thermonuclear War ...
12
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1answer
7k views

Does cold water boil faster than hot water?

I was having a chat about science with a manager in my office. We were talking about water and he said "you shouldn't boil water from the hot tap because cold water boils faster". I know about the ...
73
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2answers
12k views

Do snowballs snowball?

"Snowball" as a verb, means to increase rapidly in size - a reference to the Snowball Effect: The common analogy is with the rolling of a snowball down a snow-covered hillside. As it rolls the ball ...
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2answers
461 views

Would it have been possible for the ancients to have built a Tower of Babel? [closed]

As recorded in Genesis 11:1-9, the ancients allegedly built a tower to the skies in a valley in Babylon (near present-day Baghdad), and God scattered them across the Earth as a punishment. As ...
6
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1answer
779 views

Did DNA, in a quartz container, absorb every photon in the room?

Lance Schuttler wrote an article arguing that DNA is a wave form that uses gravity to bend light. I'm extremely skeptical of basically every claim in the article. One of the more extreme claims ...
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3answers
1k views

Does the EM drive (electromagnetic drive) work despite the apparent lack of propellant?

In recent headlines, a supposed EM drive, or RF resonant cavity thruster, has been reported to produce thrust despite the apparent lack of any propellant. The drive is purported to work by pushing ...
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3answers
1k views

Does the 'super-moon' have a measurable effect on probability and magnitude of earthquakes?

On the 14th of November 2016, the moon is both full, and is on its closest approach to Earth, causing its largest appearance size until 2033. Citation This large appearance gives it the 'super-moon' ...
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2answers
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Is the RS-28 Sarmat missile capable of destroying an area the size of France?

The Daily Mail claims Russia has unveiled chilling pictures of its largest ever nuclear missile, capable of destroying an area the size of France. Who estimated this level of destructive power? ...
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1answer
575 views

Was this video of a home made phone charger faked?

A friend of mine recently shared this video on his timeline about turning a cellphone charger into a wireless charger. I am certain that this video is wrong, but I don't know how to eloquently ...
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1answer
7k views

Can Waterseer extract as much as 37 L per day from the air?

Treehugger.com article on Waterseer Wind-powered device can produce 11 gallons per day of clean drinking water from the air [...] The WaterSeer is relatively simple device, designed to be ...
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0answers
88 views

Are low SAR phones better for health than high SAR phones? [duplicate]

Each device will have a different SAR value and follow this side https://www.rfsafe.com/samsung-cell-phones-rated-lowest-radiation-cell-phones/ they have say low SAR phone better than high SAR phone ...
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1answer
1k views

Can China's “Quantum Satellite” transmit messages faster than light?

In the past days, the launch of a Chinese "Quantum Satellite" was widely reported in world news. Most articles seem to agree that the satellite is part of an experiment to demonstrate Quantum Key ...
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1answer
384 views

Has the CERN LHC Muon Detector caused mini singularities within Earths atmosphere?

"Something very interesting happened at CERN recently – they had an accident. The accident created a “rainbow” universe. What does this mean, exactly? CERN actually created a universe for 2.6 ...
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1answer
2k views

Is biochemical transmutations of elements possible?

According to a recent press conference Russian scientists have made a breakthrough so astounding it could change the universe as we know it in fundamental ways. The essence of this discovery and ...
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684 views

Did a 16-year-old high-school girl in Iran produce nuclear energy at her home in 2007?

In 2007, Iran's president claimed that nuclear scientists in the country verified that a 16-year-old girl had produced nuclear energy at home. At the time, this ended up being a point of jokes and ...
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167 views

Is Dr Manahel Thabet one of the 21 Smartest People in the World? [duplicate]

This list includes Dr. Manahel Thabet as one of the "21 Smartest People in the World", listing her at number nineteen. Is she?
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1answer
792 views

Does having a spoon in the cup keep your coffee hot for longer?

I was recently told that having a metal spoon in the coffee would heat the cup of coffee up, and that it would be hotter if I stirred because of the conductivity of the metal in the spoon. This seems ...
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1answer
946 views

Was the vertical cannonshot related by Samuel Rowbotham ever performed?

A common claim in support of "Flat Earth" models is that a cannonball fired precisely vertically drops back upon the cannon, even back down the muzzle. One such claim appears here http://www....
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0answers
374 views

Does the Eco-Cooler reduce temperatures in tin huts by around 5° Celsius, compared to simple windows?

The zero-electricity Eco-Cooler made from plastic bottles is doing the rounds all over the interwebs: Over 70% of Bangladesh’s population live in corrugated tin huts across the countryside. During ...
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1answer
9k views

Does Michio Kaku claim he has found proof of God's existence?

This Geophilosophical Association of Anthropological and Cultural Studies article claims that Michio Kaku, a renowned theoretical physicist and science populariser, has found definitive proof that God ...
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2answers
1k views

Does a lack of radiation shadows disprove the Big Bang Theory?

This article from Creation Magazine argues that: If the big bang were true, the light from the fireball should cast shadows in the foreground of all galaxy clusters. It uses some 2006 findings ...
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0answers
478 views

Was a working prototype of the Warburtons toastie knife ever produced?

The Life Hack Stack Exchange has an answer talking about a prototype "toastie knife" from Warbutons Bakery. It was claimed that the prototype knife would heat up to allow butter to be spread more ...
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1answer
8k views

Does this video show a water droplet in gravitational orbit?

Andrew Rader, an author and engineeer, tweeted a GIF video showing a droplet of water rotating around some sort of probe. Everything has gravity - here's a droplet of water orbiting a needle in 0G....
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4answers
480 views

Was dark matter invented to explain the formation of primordial stars?

While reading a recent Creation Ministries article Five atheist miracles, I came across this claim: Here is the first problem: how do you get gases formed in a rapidly expanding primordial universe ...