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1. ### Digital and quantized signal, are one same thing?

Generally, yes, but it depends. Digital audio is a quantized signal, but class D amplifiers (which quantize in the time dimension) are not considered digital. I guess you could think of digital as complete quantization.
2. ### Classical Physics with Time going Backwards

http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=AJPIAS000074000004000313000001&idtype=cvips&gifs=yes [Broken] From abstract: "the equations of motion of charged particles are invariant under time reversal" If only I could read it without paying \$. Was there something...
3. ### Classical Physics with Time going Backwards

I thought magnetism just negated.
4. ### Classical Physics with Time going Backwards

Of course that goes beyond classical physics. As far as we are concerned, the exact path taken by a boulder as it falls off of a cliff and smashes is reversible.
5. ### Classical Physics with Time going Backwards

Well, any scenario where time goes forwards also follows the laws of physics with the same scenario running backwards.
6. ### Classical Physics with Time going Backwards

First, what does it mean for time to be going backwards? Basically, any time there is a reference to time, we just need to negate it - so time will have a negative effect of what it usually would. Velocity (1D): There is an object that moved from A to B in time t at a constant speed. If we...
7. ### Canceling out low frequencies noises (subwoolfers)

You could always just go talk to the guy and tell him it's bothering you. That's better than calling the police over it. Other than that, you could decrease the air pressure in the room you are in :D
8. ### Wavelength in Orbit

I'm not asking a question, simply making an observation. As for the diagram, the three rectangles on top of each other (labeled 1, 2, and 3) are sequential images of the impulses advancing and the object moving perpendicular to the direction of the wave. In frame 1, the object is experiencing...
9. ### Wavelength in Orbit

Have a look at this diagram I made: http://la.gg/upl/wavelength2.jpg [Broken] The scenario is that you are in circular orbit around the Earth and a radio signal is sent from the center of the Earth. If you have a clock with you that is synced up to a clock on Earth (we are ignoring relativity...
10. ### Blueshift + Classical Physics = Golden Ratio

L is the distance from (A) to (B) that observers on (A) would measure if only classical physics applied and both (A) and (B) were stationary. L is not the distance of (B) away from (A) at the time of the emission of the light signal, but the distance of (B) away from (A) at the time of the light...
11. ### Blueshift + Classical Physics = Golden Ratio

I was doing calculations to see how far classical physics would take us in terms of the speed of an object never exceeding the speed of light in a reference frame. Here was the scenario I set up: http://la.gg/upl/light.jpg [Broken] So, if we want to find the time it takes the light to get...
12. ### Can absolute zero ever be achieved?

Great post Count Iblis! I agree with what you are saying.
13. ### Exploring the Doppler Effect: Compression & Complex Formulas

If you want a way to think about why this must happen, you can think about it this way: In a given time period, the train has traveled a certain distance determined by its speed. Let's assume this train produced only two clicks, one at the starting point and one at the ending point. If you had...
14. ### Can absolute zero ever be achieved?

Well, it would be a violation of the Heisenberg uncertainty principle if you could detect the existence of such a particle. I don't see how its sole existence would violate it. Also, thermodynamics seems to be a field of probability. While energy tends to flow from high to low on average...