Portal:Physics/Did you know/Suggest
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[edit] Nominations
More "Did you know"s for Portal:Physics can be nominated here. General guidelines for nominations, loosely based on Wikipedia: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> ~~~~
[edit] 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)
[edit] 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)
[edit] Number of Lightnings
Across the earth, 100 lightnings strike every second.
- 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)
