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Jan
18
comment How am I able to stand up and walk down the aisle of a flying passenger jet?
"I needed 500 times the energy to do it." No, the plane's engines did that for you. You felt it as acceleration on takeoff pushed you a little firmer into your seat.
Jan
13
comment Does quantum mechanics play a role in the brain?
@CuriousOne: I'm just saying, science involves dismissing ideas (when it's well-founded to do so), but never dismissing people.
Jan
13
comment Does quantum mechanics play a role in the brain?
@CuriousOne: Firstly, I didn't get any responses at all, seeing as it's not my question. Secondly, I was referring to your casual dismissal of the cited arguments as "questionable philosophical ideas" and your implication that they were put forth out of greed for booksale money rather than anything else.
Jan
13
comment Why can't the human voice produce a Shepard tone?
@Soren: I'm interested to meet the human who is able to produce only one tone at a time. That would be remarkable!
Jan
13
comment Does quantum mechanics play a role in the brain?
@CuriousOne: That's an extraordinary way to talk about ideas with which you disagree. How extremely rude. Talk to me when you can explain human consciousness.
Jan
1
comment How can light emit three kinds of spectra?
Light doesn't "emit" anything...
Dec
5
comment Questions on the movie Gravity (2013)
Of course that wouldn't really have been a "portrayal" at all in any useful dramatic sense :P
Nov
13
comment Could gravity accelerate light?
@corsiKa: See: USS Jenolen vs dyson sphere
Nov
13
comment Could gravity accelerate light?
@Mehdi: Two different ways of modelling the same thing. It's all abstractions when you get right down to it.
Nov
8
comment Why not dilute radioactive waste?
@borilla: Right but not in the way that the OP's imagining.
Nov
7
comment Why not dilute radioactive waste?
It seems the OP has invented a principle of conservation of radioactivity :) Regardless, the premise of the question (and thus the assertions contained therein) is just fundamentally wrong so I'm afraid I must downvote.
Oct
28
answered If dark matter only interacts with gravity, why doesn't it all clump together in a single point?
Oct
19
comment Will the box move?
Case 1 is simpler than that - the man is pushing forwards with his hands, using the floor of the same object (pushing backwards) as a counterweight. These cancel out. He's literally pushing and pulling the same thing the same amount. You don't need to go into the whole "the floor is pushing back" thing, which I find rather unintuitive and I'm sure I'm not the only one!
Oct
19
comment Where does the energy go in a rocket when no work is done?
I'm basically quoting my mechanics 101 material. I don't see how applying additional force to a body can result in no net velocity increase. That seems ridiculous to me. Just because I push a body sideways doesn't mean it stops going upwards so fast. I'm adding to the velocity, not simply redistributing its component vectors.
Oct
19
comment Where does the energy go in a rocket when no work is done?
@EmilioPisanty: Um if I apply a sideways force to an upwards moving object does it not begin to go diagonally?
Oct
19
comment Where does the energy go in a rocket when no work is done?
"It would do no work on the rocket" What makes you think that?
Oct
19
comment Are we increasing the gravity of Earth with our population?
@FrankH: Thanks. FWIW, I wasn't questioning you; just shocked!
Oct
18
comment Are we increasing the gravity of Earth with our population?
10 tons per day???! Woah.. Wait, 250 tons per day?!?!?! Wow!
Oct
14
comment Why should the Planck constant be a constant throughout all space?
@RBarryYoung: And this is why we shall not post answers in the comment section ahem!
Sep
26
comment Why doesn't the sun reflect off Earth's oceans from space like a billiard ball?
This. The key point is that for "proportionally smooth" to be in any way relevant, you'd have to scale up the light waves, too.