Score
Title
94
AskScience Panel of Scientists XVIII
547
AskScience AMA Series: I am Melinda Krahenbuhl and I am the director of the Reed Research Reactor, the only nuclear reactor operated primarily by undergraduate students. AMA!
8929
What elements are at genuine risk of running out and what are the implications of them running out?
271
Can you break sound barrier under water or any other material?
4028
What’s the largest star system in number of planets?
19
Why does plastic turn white at the creases when folded/bent?
2
How does radiation poisoning work?
3
How does thermal imaging work?
21
Do microwaves leave residual changes to molecules after heating?
2
How is the height of the mountain measured?
3
Can a setup of hall engines provide enough thrust to keep a satellite stationary above earth?
2
Does the temperature have any (noticable) effect on air resistance?
8
How does a memristor work?
3830
What is the effect, positive or negative, of receiving multiple immunizations at the same time; such as when the military goes through "shot lines" to receive all deployment related vaccines?
3
If a planet had a radius that was equal to the altitude of Earth’s geosynchronous orbit, but had the same mass and rotational period as the Earth now, would there be reduced or zero gravity on the surface?
1
What is lost and what is preserved in a particle collider?
10
Why does snow melt in the sunlight, even when the temperature outside is below freezing?
12
Mar's summer temperature can be 20 celsius. Could a human survive with just an oxygen mask?
1
Is there an altitude at which there is no longer a speed of sound?
0
How would a moving target affect the rate of nuclear fission vs a stationary target?
14
What would a spaceship moving at 0.9c firing lasers both in front of it and behind it look like to an external reference frame?
5
Does adiabatic warming occur when air descends in the Earth's polar cells?
24
How does the cosmic microwave background persist? Why hasn't it been distorted and destroyed by new sources of energy pumping into space?
5
How does cancer metastasis work?
7
Can a comet maintain an atmosphere?
1
How does RFID blocking material work?
0
Does the Meissner effect relate to Lenzs law?
9
Why hasn't The Asteroid Belt formed a planet?
9
Can you use a normal (CMOS) camera for detecting scintillation?
3
How do people know that the Island of Stability exists? And could there possibly be another "island" after it?
58
How can brain cells cause tumours even though they can not multiply?
9
How far back can you go before carbon dating becomes unreliable?
2
How does a computer process “simple” events?
1582
Ask Anything Wednesday - Biology, Chemistry, Neuroscience, Medicine, Psychology
2
What is the nonrenewable fuel cost to produce x quantity of electricity?
1128
What triggers beta particles to form, and for what reason can they not penetrate substantially thick aluminium?
0
What is the strongest a magnet could be?
1240
If capacitance increases as distance between plates decreases, why aren't there very small 1F capacitors?
0
What makes astronomers think life in general isn't possible on gas giants?
3
How applicable are Newtonian Physics in real life? Is it completely false or are there some concepts which can be used to accurately predict real-life situations?
1051
is it possible to move an object in circular motion using magnets?
2
What would hydrogen in metal form look like?
3 mfb- What do you mean by "entire chemical structures"? Molecules? Sure. They can have narrow absorption bands as well. Note that these molecules transfer their energy to the environment quickly. You can heat regions with a higher concentration of your target molecule more than other regions that way, but you can't get "hot molecules x in cold liquid". Microwaves do not excite very narrow resonances, but they mainly heat water, for example.
3 0 mfb- What do you mean by "entire chemical structures"? Molecules? Sure. They can have narrow absorption bands as well. Note that these molecules transfer their energy to the environment quickly. You can heat regions with a higher concentration of your target molecule more than other regions that way, but you can't get "hot molecules x in cold liquid". Microwaves do not excite very narrow resonances, but they mainly heat water, for example.