Backup Room – The h Bar

HNQ

17:57

1

I'm reading "The water wizard" by Callum Coats ed. Gill Books. At page 9 I read: Terracotta exhibits a porosity particularly well-suited to purposes of water storage. This is because it enables a very small percentage of the contained water to evaporate via the vessel walls. Evaporation is alway...

Martin Sleziak

21:48

-8

Q: More network sites to see advertising test

We’ve been exploring the concept of using open auction to manage advertising on some Stack Exchange sites. Under this model, advertisers (who have been organized into categories based on their products) “bid” for an advertising spot. There is a floor price - a minimum price for the spot, and all ...

discussion featured advertising

-3

Q: Advertising Test Beginning Nov 13 2024

We’ve been exploring the concept of using open auction to manage advertising on some Stack Exchange sites. Under this model, advertisers (who have been organized into categories based on their products) “bid” for an advertising spot. There is a floor price - a minimum price for the spot, and all ...

discussion

HNQ

22:48

3

Q: An object with mass cannot travel with the speed of light in vacuum but what if lights speed in a medium is below the object's speed?

I read in my Physics textbook that when light falls perpendicularly on an optically denser medium it doesn't change its path rather it's speed slows down. If after multiple refractions the speed of light becomes equal to the speed of the object, what will happen? What if the speed of light was ne...

special-relativity optics refraction faster-than-light cherenkov-radiation

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Backup Room – The h Bar