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63 votes

Does this "reverse microwave" cool food "without electricity and is 100% sustainable"?

The claim, to no-one's surprise, is false. Electrocaloric heat-pumping requires energy to be supplied (e.g. by electricity). The alternative would be to break the Second Law of Thermodynamics. The ...
Oddthinking's user avatar
  • 144k
18 votes

Do crystals protect against EMF

No. The types of crystals advertised as "EMF blocking" are typically inert minerals which basically have no EM-field by themselves (not magnetic and having no net charge). There is nothing stopping EM ...
Dapianoman's user avatar
16 votes
Accepted

Could a single nuclear EMP kill 90% of Americans within one year?

That number was mentioned in the statement of Dr William R Graham and Dr Peter Vincent Pry, chairman and chief of staff of the Commission to Assess the Threat to the United States from EMP attack. ...
ventsyv's user avatar
  • 7,124
15 votes
Accepted

Do tinfoil hats protect against any sort of radiation?

Though tin foil hats do protect you from electromagnetic radiation and from some forms of ionizing radiation, they do not protect you from all possible electromagnetic radiation: In a not-too-serious-...
Fabby's user avatar
  • 267
15 votes
Accepted

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

From the EagleWorks paper: The test campaign included a null thrust test effort to identify any mundane sources of impulsive thrust; however, none were identified. They are not lying, they did ...
ventsyv's user avatar
  • 7,124
13 votes

Do recent images from the JWST pose a major crisis for Big Bang cosmology?

No. Mr. Lerner provides no evidence for the new JWST data causing a major crisis in cosmology, nor that "The Big Bang didn't happen"; other cosmologists disagree with his conclusions. The &...
Schwern's user avatar
  • 20.2k
13 votes
Accepted

Do recent images from the JWST pose a major crisis for Big Bang cosmology?

Some of Lerner's previous complaints about the state of the art did and still do have validity, but his claims about the JWST are wildly out of proportion. Lerner's ideas were presented in a 1991 book,...
user65963's user avatar
  • 154
12 votes

Does aluminum foil safeguard your credit card from RFID attacks?

Yes. Duo labs (security vendor) says on https://duo.com/decipher/labs-presents-whats-happening-with-rfid-blocking-gear It turns out standards for testing these RFID-blocking devices actually ...
Rory Alsop's user avatar
  • 6,276
12 votes

Can Dubai make it rain with drones that emit electric charges?

Yes. Some articles: one, two, three, four. In essence, chemical cloud seeding uses something like salt or silver iodide as a nucleus. Water vapor collects around such particles, eventually growing to ...
Taejang's user avatar
  • 245
11 votes
Accepted

Is keyless theft/relay theft a practical threat for vehicles with fob/keyless entry?

Is keyless theft/relay theft a practical threat for vehicles with fob/keyless entry? Are videos demonstrating it happening practical enough? https://www.youtube.com/watch?v=bR8RrmEizVg Police in ...
Federico's user avatar
  • 1,810
10 votes
Accepted

Death by electroshock from 12V battery

No, you can't get an electric shock from a 12V power source. The Underwrites Laboratory which regulates product safety in the US defines "hazardous voltage" as Hazardous Voltage Any voltage ...
Hilmar's user avatar
  • 1,193
10 votes

Does using BlueTooth devices cause leakage of the blood-brain barrier?

No, it seems that low power electromagnetic fields(such as from BlueTooth devices) do not cause any significant increase in the permeability of the blood-brain barrier. Research regarding effects the ...
Giter's user avatar
  • 11.6k
10 votes

Was an invisible electrostatic wall generated at a plastic tape factory in August 1980?

A primary source for this is Wide Polypropylene Web Static Charge - A Phenomenon Worthy of “Star Trek” ANTEC '97 Conference Proceedings, CRC Press, pages 1310-1313. A web of polypropylene plastic, 21 ...
DavePhD's user avatar
  • 107k
8 votes
Accepted

Did an asteroid impact in 2000 cause widespread power outages in Yukon, Canada?

Notably, the body that created the fireball was initially only ~4 meters in diameter with a mass of 200,000 kg prior to atmospheric entry, traveling around 16 km/s (Brown et al. 2000). This is ...
HDE 226868's user avatar
  • 11.1k
8 votes

Was this video of a home made phone charger faked?

Any basic introduction to how wireless charging works and what it requires should make it immediately apparent that none of those elements are present. For example, here's a writeup on Qi with the ...
David Schwartz's user avatar
8 votes

Can 'resonant frequencies' kill cancer cells?

Short version This is a partial answer, as I've traced this back far enough to find significant connections to pseudo-science and basis for doubt, but I haven't found any sources that directly refute ...
Nat's user avatar
  • 4,111
8 votes
Accepted

Do the mountains around this Norwegian valley act like a giant battery?

The scientific literature has almost entirely ignored this theory The episode (9:54) doesn't present the battery theory as conclusive fact. It is just a theory. They still need to work out how the ...
BobTheAverage's user avatar
6 votes

Can 'resonant frequencies' kill cancer cells?

The FDA approval is confirmed in FDA's press 2015 release, which mentions a trial, because it would have been absurd for the FDA to give apporoval otherwise: In the clinical study used to support ...
against very long user names's user avatar
4 votes
Accepted

Do we have enough renewable energy for a humanity only using electrical cars?

Using Tesla's Model 3 electric car and American driving patterns as an example, it is entirely possible that electricity needs for every driver could be met with renewable energy. In short, if every ...
Giter's user avatar
  • 11.6k
4 votes

Can high-frequency coil radiation kill disease? (e.g., Lakhovsky's multiple-wave oscillator [MWO])

What specific claims are considered quackery, and why? Pretty much all of it. The referenced page from "Altered state newsletter" is solid woo. The trouble with confronting woo is that it sounds ...
Paul Johnson's user avatar
  • 16.6k
3 votes

Is the Infinity MG10 a working generator that consumes no fuel?

No Perpetual motion machines are impossible - move along. Once a claim of "free" energy is made, the claim is false - the second law of thermodynamics says so. With a sufficiently large ...
Dale M's user avatar
  • 1,365
3 votes

Do electromagnetic fields affect stress and the fight or flight response?

It may be helpful to look at different regions of the EM-spectrum one by one to attempt an answer. The spectrum ranges from static fields, over very low frequency and radio waves to high and ultra ...
thomastiger's user avatar
2 votes

Are electric chairs powered by generators connected to the mains in the same building?

In this article from 1976 regarding Texas reactivating their electric chair after the death penalty moratorium imposed by the US Supreme Court was lifted, the article specifically mentions the ...
tj1000's user avatar
  • 199
2 votes

Can a "special resistor" save a water heater tank from rust?

The "special resistor" doesn't protect the tank from rust, the sacrificial anode does. The special resistor - or any resistor for that matter - makes the anode last longer, which has been recognized ...
Mark's user avatar
  • 7,767
1 vote

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

The answer is no. The paper does not claim that the thrust comes without "propellant", and it includes a possible physical interpretation of the results not violating Newton's third law (emphasis ...
Sklivvz's user avatar
  • 78.7k
1 vote

Does the amount of land needed to get the USA to zero-carbon electricity correspond to a small area of Texas?

Firstly, the northern 55 km of the square is the Oklahoma Panhandle, while the remainder is the Texas Panhandle, which is 270km east to west. The blue square is therefore about 123km on each side, ...
DavePhD's user avatar
  • 107k
1 vote

Are electric chairs powered by generators connected to the mains in the same building?

OK, did more Googling. Louisiana used a portable electric chair, nicknamed Gruesome Gertie, which is now in a prison museum. The chair was brought in a panel van to the parish (county) jail where the ...
Andrew Lazarus's user avatar

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