Score
Title
75
AskScience Panel of Scientists XVIII
247
AskScience AMA Series: "I am Rhett Allain, physicist and technical consultant on Mythbusters and MacGyver. Ask me about the physics of pretty much anything!
4194
Is body chemistry affected by sound, in the same way that melatonin production is affected by light?
4081
Is there any organism that has more than one brain?
35
How do astronomers know the "red shift" is coming from the Doppler effect and not from static stars producing light at a red wavelength?
14
How does a flu vaccine lessen symptoms when you catch a flu variant that isn’t one of the variants in that seasons vaccination?
34
Do NSAIDs, such as ibuprofen, reduce specific areas of inflammation or do they reduce inflammation overall?
3414
How much radiation does a luggage scanner deliver vs say medical x-ray?
40
How do we know the temperature of the centre of the sun?
25
Would Koko, the sign-language speaking gorilla, have been able to translate what a different, non-signing gorilla was saying?
9
[chemistry][nuclear physics] if the island of stability does exist, do we have any way of estimating what the behavior/properties of those elements will be like?
33
How do they reproduce seedless fruits/vegetables ?
14
Is it possible for an object to be travelling so fast it would bounce off the atmosphere?
14
Most antibacterial sprays kill 99.9% of germs. What's the 0.1% of bacteria consist of?
12
Is Crystallized Bismuth the Only Instance of Naturally Occurring Right Angles?
617
Can someone explain the environmental impact of electric car batteries?
9
How is the CMB used to calculate the Hubble constant?
9
Would it be possible for a planet's day to be longer than its year?
28155
Do heavily forested regions of the world like the eastern United States experience a noticeable difference in oxygen levels/air quality during the winter months when the trees lose all of their leaves?
4
If we reversed all charges would the world be the same?
4
When a banana ripens, does it gain calories?
2
How does the sky look like on Mars? How bright is the Sun comparing it to the view from Earth?
0
How do compilers adapt to different hardware?
7
How would quantum computing break modern cryptography?
16
Does breast size affect risk of breast cancer?
3
Do snakes have saliva glands?
39
Can a virus go extinct?
13
How is Titan able to have an atmosphere pressure similar to Earth when it's gravity is so much lower than Earth's?
53
How have cancer treatments actually improved?
22
Does knowing multiple languages actually alter your brain structure? If so, how?
39
Would it be theoretically possible to trap light with a strong enough set of magnets/electromagnets?
22
Why do we use four or more rotors on drones, but only maximum two on regular helicopters? Why are we not making full size quadrocopters?
4
Is the color of an animal's covering (skin, furr, feathers, etc) determined by the amount of colors they can see?
22
Why don't they use jet engines for the first stage of rockets?
1
Chemically speaking, what makes something sweet? What makes some sweeteners spike one's blood sugar, while others don't?
12
Is it possible to make concrete a liquid again from a solid?
380
If I were to release oxygen into the vacuum of space where would it go?
8
Are organisms trapped in amber mineralized fossils, the original tissue or a combination of both?
5
Is it possible to have similar mass planets in a stable mutual orbit?
8
What physical part of a tree absorbs Co2?
8
Does soapy water flow through pipes more quickly than plain water?
8
Why are there so many types of cables?
25 cantgetno197 Yes. The reason black-body radiation has such a distinct distribution is because you have a large number of particles trading energy with each other in thermal equilibrium. >Does this blackbody radiation released from the inner atoms excite or heat the surface atoms slightly? Well in an infinite system (or I suppose an insulated system surrounded by perfect mirrors at absolute zero or the same temperature as the interior), everyone is just passing energy to one another and the average energy of everyone follows something like a Maxwellian distribution and every spot is perfectly identical. When you have a surface the surface atoms are basically "dropping the ball" and throwing some of their light out of the system and off into the infinite unknown. As a result, they get colder. The inner atoms still pass their energy to the surface atoms, but now they're getting less of that energy back in return (since the surface atoms are colder) and thus the inner atoms start to cool. Thus we have heat loss through thermal radiation.
26 0 cantgetno197 Yes. The reason black-body radiation has such a distinct distribution is because you have a large number of particles trading energy with each other in thermal equilibrium. >Does this blackbody radiation released from the inner atoms excite or heat the surface atoms slightly? Well in an infinite system (or I suppose an insulated system surrounded by perfect mirrors at absolute zero or the same temperature as the interior), everyone is just passing energy to one another and the average energy of everyone follows something like a Maxwellian distribution and every spot is perfectly identical. When you have a surface the surface atoms are basically "dropping the ball" and throwing some of their light out of the system and off into the infinite unknown. As a result, they get colder. The inner atoms still pass their energy to the surface atoms, but now they're getting less of that energy back in return (since the surface atoms are colder) and thus the inner atoms start to cool. Thus we have heat loss through thermal radiation.