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1d
comment How hail stone is created?
See also Earth Science.
2d
awarded  Nice Answer
Mar
21
comment Could an asteroid land slowly on Earth's surface?
With this level of fantasy you might enjoy the questions and answers at Worldbuilding ;-)
Mar
10
comment What's the distance between the center of mass and geometrical center of Earth?
Paper discussing exactly this, but for Venus.
Mar
10
comment What's the distance between the center of mass and geometrical center of Earth?
See also Earth Science.
Mar
2
comment Why In Thermosphere is He and O divided as measured?
See also Earth Science Stack Exchange.
Mar
2
comment Why In Thermosphere is He and O divided as measured?
Can you please provide some more information about the figures? What's on the axes? What are their sources? How is it measured? What elevation? What location?
Feb
18
comment Short of collision, can gravity itself kill you?
How would blue shift kill you?
Feb
1
revised Is the butterfly effect real?
Added link to youtube video.
Feb
1
comment Is the butterfly effect real?
@PeterMortensen Horizontal and vertical position in arbitrary units. It's a schematic image of a double pendulum. Compare video. I also added a video link to the answer.
Jan
31
awarded  Good Answer
Jan
29
comment Is the butterfly effect real?
@descheleschilder Chaos theory implies that adjacent states in the state space at time $t$ can correspond to states at time $t + \Delta t$ that are arbitrarily far apart. This situation is not unique to chaos theory, but applies to (other) unstable equilibria as well. Balance a ball on the summit of a hill: the flap of the butterfly can make the difference which way it will roll. The ball might trigger an avalanche, etc.. In summary: where situations are unstable, a tiny difference in the initial state can amplify considerably. This also applies to chaos theory.
Jan
28
revised Is the butterfly effect real?
added 130 characters in body
Jan
28
comment Is the butterfly effect real?
@DavidHammen Perhaps I was mistaught. I admit I did not study the history in detail. Perhaps a good question for History of Science and Mathematics. At any rate, I added a note that I am not sure about the origin of the phrase anymore.
Jan
28
comment Is the butterfly effect real?
Not this diagram specifically. When I learned about chaos theory I learned that the word butterfly was inspired by the phase diagram. Is that wrong?
Jan
28
awarded  Nice Answer
Jan
27
comment How is sun's atmosphere (corona) hotter than the surface itself?
You found it from your own research? What instruments did you use and how?
Jan
27
answered Is the butterfly effect real?
Dec
14
comment How do molecules absorb heat?
Critically important for understanding the greenhouse effect is that greenhouse gases transmit solar radiation emitted by the Sun, but absorb thermal radiation emitted by the planet. I'll leave the molecular answer of the nature of heat to someone else.
Dec
4
comment Why less temperature at high altitude
Very interesting — I didn't know the Tibetan Plateau was much warmer than it ”should” be based on an oversimplified understanding.