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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.
Dec
1
comment Why Sun is not able to attract mercury closer?
Why would it spiral inwards? I think referring to GR is just confusing when the OP seems to misunderstand concepts on a far more basic level.
Nov
27
answered Why aren't pictures of Pluto darker than those of other planets?
Nov
27
comment Why aren't pictures of Pluto darker than those of other planets?
Cross-site duplicate: How did New Horizons take such well lit pictures of Pluto?
Nov
23
awarded  Yearling
Nov
21
comment If gravity isn't a force, then why do we learn in school that it is?
@goblin Maybe so.
Nov
20
comment If gravity isn't a force, then why do we learn in school that it is?
@TimB And a good physics teacher will teach children the concept of models, and when a smart inquisitive kid asks further, should tell this kid that the Newtonian model is only approximately correct but good enough for daily use.
Nov
20
comment If gravity isn't a force, then why do we learn in school that it is?
By that reasoning, every model is a lie to children.
Nov
10
revised How much of the Earth's atmosphere is visible from its surface
added SI units