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More "Did you know"s for Portal:Physics can be nominated here. General guidelines for nominations, loosely based on Misplaced Pages:Did you know include:
- Pick DYKs in articles that are interesting.
- Look for articles that are over 1,000 characters in size - no stubs.
- The "Did you know?" fact must be mentioned in the article.
- Try to select articles that cite their sources, particularly the item mentioned.
Suggestions should be added at the bottom of this page by using the following code:
=== <Example> === <Proposed fact> * '''Support''' - <reason> ~~~~
To support or oppose a nomination, add a line below the most recent vote for the fact by using the following code:
* '''Support''' - <reason> ~~~~ * '''Oppose''' - <reason> ~~~~
Neutrino flux
Did you know that if you hold your palm towards the sun, day or night, more than a trillion solar neutrinos pass through it every second?
- Support - Because it's really cool! The article mentions the solar neutrino flux at the earth is 70 billion neutrinos/(cm*sec). Since the hand is around 50 cm^2, it's probably around 4 trillion, but I think "over a trillion" is safer, and just as impressive. Bmk 03:31, 9 February 2007 (UTC)
- Support - Because of the above and the phrase or night, that means that neutrinos cross the earth easily.--Alexcalamaro (talk) 10:46, 13 September 2008 (UTC)
- Support- Because Neutrinos are a very unapreciated subset of physics, and are very fascinating123Mike456Winston789 (talk) 19:30, 13 December 2009 (UTC)
Light From The Sun
Did you know that photons from the core of the Sun takes up to 50 million years to reach the surface, but only 8.31 minutes to reach the Earth from the surface.
- Support - It's amazing that light takes millions of years to travel 1.392×10^9 m (diameter of the sun) but only 8 minutes to travel 1.496×10^11 m to the Earth. Aiyda 18:01, 10 May 2007 (UTC)
watery wonders
in a single drop of water there is more molecules than in every star you can see in the sky! There may be as much as 4,595 pounds of gold per cubic mile of a sea water but sadly it would be too expensive to try and extract it.
energetic facts
In a single second the sun uses enough energy to power the earth for a million years! in a single second earths population uses as much energy as there is in 3,300 tons of oil! In a single second more than 750 barrels of oil are pumped out of the ground!
Number of Lightnings
Across the earth, 100 lightnings strike every second, thats 8 million times a day!
- Support In addition to being a surprising fact, it's interesting to elaborate on how the lightning and its location is detected by the radio waves it emit. EverGreg 07:57, 17 September 2007 (UTC)
The Jewel of Physics
Did you know that the theory of quantum electrodynamics is often called the jewel of physics because of its extremely accurate predictions of quantities such as the anomalous magnetic moment. The theoretical prediction agrees with the experimentally measured value to 10 significant figures, making it the most accurately verified prediction in the history of physics.
Power of the Solar Plasma
Did you know there is a surprisingly low rate of energy production in the Sun]'s core—about 0.3 W/m3 (watts per cubic meter). This is less power than generated by a candle!
Space made of Atoms?
Space is nothing continous, but instead composed of a colossal number of discrete elementary entities, at the (very small) planck scale! User:The_Quantum_Guy
- Oppose - This is one of several theories on the subject that has not been experimentally verified, kindof like string theory. It's a theory, but we can't list it as knowledge. In any case EverGreg (talk) 19:37, 2 June 2009 (UTC)
Heim Theory
Did you know that Heim theory attempts to solve the problem of faster than light travel?