-
Posts
134 -
Joined
-
Last visited
Content Type
Profiles
Forums
Events
Everything posted by ski_power
-
For removing electrons we need to supply energy, and photons are released only if the electrons jump from the higher orbit to the lower orbit. But in the process of removing electrons they don't jump to the lower orbit. Thus no photons are released.
-
Hey wait, just for confirmation isn't torus a doughnut, with a hole in the centre? This one According to common sense, if the earth is flattened at the poles, due to spinning at the equator, shouldn't the same force assist further flattening of the planet?
-
Why cannot the airplane accelerate for ever in the sky?
ski_power replied to albertlee's topic in Classical Physics
Yeah, but still we don't know how thrust and drag are equalled(if they actually are, or not)? -
Hey swansont, if the earth rotated at 8000m/s then it would act like a HUGE centrifuge. And then after a few million years, wouldn't earth become a torus?
-
Why cannot the airplane accelerate for ever in the sky?
ski_power replied to albertlee's topic in Classical Physics
Firstly, at low speeds the plane is able to accelerate because there is very less air resistance(How are you able to sprint?, Same type). But as Pincho said, the faster you go, more the resistance(Drag). Hence, you are able to accelerate to normal speeds of around 0.7-1.0 Mach. Also, the aerodynamics play an important factor over here. More streamlined is the design, lesser is the air-resistance, reater is the possibility to accelerate to higher speeds. Also, the Newton laws thing, it's crazy. The air doesn't offer any reaction(atleast that's what I think, correct me if wrong), because you aren't applying any action on the air. You're pushing the plane forwards, not the air backwards. -
Oh ok. Then I guess the theory of non-constant velocity of light goes down the dumps then. But in an isotropic medium, does light ever slow down(consider infinite space available for that medium), over infinitely long distances?
-
But that gives a CPA of hardly 0.03349515625 m/s^2, then how is it able to produce g(other than the Principle of Attracting bodies). What if we lived in the inner part of the ring, then how much CPA would be needed to simulate near-earth gravity, assuming all identical earth properties. And also, how come in the Astronaut Centrifuge, they are able to produce higher g that too with help of acceleration,
-
That's the process to create a Bose-Einstein Condensate right? Followed by evaporative cooling.
-
And is there no one to oppose the path of light? How about those cosmic particles in space? I mean after millions of light years even in space due to the opposition of those cosmic particles, light would slow down atleast a little, wouldn't it?
-
How come in tube lights plasma is used? Are those mercury vapours in plasma state? And in normal room temperature, how does it remain plasma, or does it become plasma after the application of that high voltage?
-
I thought newtons laws were: 1. Something about inertia. 2. F=ma (from which we can derive that work done W=F.d.cos(theta) ) 3. The action reaction thing. How does that help? I'm a little weak in physics, so please don't get bugged with me. Thanks.
-
Now that's a good thought. It sounds serious, but after a second look it sounds funny too. I guess it should "spin" fast enough to keep the people from drifting away. 7919.59594928933 m/s should be the approximate velocity it should travel to give earth like gravity(assuming that it's inner radius is the same as that of the earth, and using a=(v^2)/r). Does Earth spin that fast?
-
Ok, are plasma useful anywhere. And how does it behave differently from a gas? Because it basically is gaseous right?
-
Oh ok, polarization is wave property, got it. (I guess "wavicle" is a radical new way of thinking) So, nature of light still remains mysteriously to us? But assume that we know the nature of light, then what will we benefit from it?
-
How does an object not use energy while in motion. To propagate forward, it needs to overcome displacement, and hence needs to "spend" energy in order to "get there"
-
But wouldn't Centripetal Acceleration give us gravity on the inside part of the ring? Assuming it is rotating along it's principal axis, ie perpendicular to the plane through the centre
-
But wouldn't Centripetal Acceleration give us gravity on the inside part of the ring?
-
Using earths magnetic field and gravity to travel?
ski_power replied to a topic in Classical Physics
Ok, now I got it. Thanks. -
Ok, I understood swansont. Silly me. Crash, Aren't light particles massless? Or are you talking of relativistic mass?
-
Using earths magnetic field and gravity to travel?
ski_power replied to a topic in Classical Physics
Ok got your first part, But I lost track here "It can't be a static device that can be used to e.g. shield half of a ferris wheel, because that's perpetual motion, too." Could you elaborate. -
When I said ring planet, I actually meant a planet which is in the form of a ring. And it spins along it's diameter.
-
What is plasma? Isn't it a form after gas, or is it between liquid and gas? I thought it was after gas, but after reading yt's post, I'm now confused.
-
I was taught that light travelled in electromagnetic waves, and hence it could travel in vacuum. Not because that photons were the medium. And one small doubt. How does light "know" when to behave like a particle(Photo Electric Emission, Polarization) and when to behave like a wave(Simultaneous reflection/refraction, Interference of Light etc)? This question has been puzzling me for a long time.
-
Ok, can anyone listen to this hypothesis. Light travels from a place to another in a straight line. For moving from one place to another it would need energy. But then, if it uses its energy(ie KE) then wouldn't it's speed actually decrease? Then, velocity of light would no longer remain constant, right? But if velocity of light isn't constant(in a given medium), then what will happen to quantum mechanics? I might seem to talk dumb, but please can anyone explain this thing.
-
One question about gravity. In a ring planet(a la Halo), will it be possible for natural gravity to occur. And assuming that it's characteristics(ie mass, density, angular momentum etc) are identical to the earth, then how much g would it exert on us? PS: Are you guys geniuses or what?