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In the deep, far future, at the time of the "heat death" of the universe, if I turn on a radio will I get the sound of static or of total silence?
Beyond the established symmetries of physics - Charge, Spin, Color, Time, etc. - is there any such thing as symmetry of Information?
Is there a temperature so hot that relativistic effects are noticeable?
Why can't Strings in String Theory be replaced with Springs?
If Mars has an impact on Earth's Milankovitch cycles, what instability does the nearly binary Earth/Luna system have on Mars, Venus, and beyond?
Mars influence on the Milankovitch cycles:...
What liquids have the lowest refraction?
Asking this because I’ve been thinking about resin printing and how a small layer of said liquid could, in theory, be used to make the prints faster and negate any problems regarding the FEP film (which can wrinkle, tear and be a hassle to clean when small pieces are stuck to it). The ideal liquid would have to be:...
Attempting to freeze matter under extreme pressure?
I tried finding some research and found lots about freezing matter or putting it under extreme pressure, but not trying both....
Potential energy created by same poles of magnets
Found this very useful Youtube video about How do Magnets & Magnetic Fields Work? and within it I finally found someone willing to explain greater details about how same poles repel in laymen terms. The link above takes you to the section where the Presenter explains how (as I understand him) potential energy forms between the...
Why are we so concerned with oxygen production yet we never hear about nitrogen production, though we actually need 78% nitrogen vs 21% oxygen to survive?
Excess oxygen is actually harmful to humans, but all the climate warnings are about losing oxygen, not nitrogen edit: but when we look for habitable planets, our focus is ‘oxygen rich atmosphere’, not ‘nitrogen rich’, and in medical settings, we’re always concerned about low oxygen, not nitrogen....
Can sufficiently energetic EM waves of a specific frequency affect weaker EM waves of a different frequency?
My initial thought is “no,” since our eyes, being receivers for specific wavelengths of EM radiation, can’t see frequencies like infrared, no matter how bright. Likewise, my cell phone’s WiFi and cell modules don’t conflict with each other (as far as this layperson can tell, anyway)....
What are some popular sci-fi gadgets that are actually possible to construct in theory?
I am talking about gadgets we see in science fiction movies that obey the laws of physics of our universe and could theoretically be constructed, barring the limitations of materials, energy and time faced by our civilization at the moment.
Photon pair generator?
Does anyone know where I could find a reasonably priced photon pair generator online?
Sound in space
Where does the sound go to when you’re in a spaceship in space?...
What happens if an electron collides with an antimatter particle that is not a positron?
I know that if an electron collides with its antiparticle, the positron, they annihilate each other and energy is released. But what happens if an electron collides with other antimatter that is not its antiparticle, like an antiproton or an antineutron? Do they annihilate each other too?
What is a hobby you enjoy, but seems too quirky or obscure to bring up in most conversations?
Mine would be creating pen and paper ciphers for my made up secret communication needs.
What's some really unpopular opinion you have?
Most of the time when people say they have an unpopular opinion, it turns out it’s actually pretty popular....