Recent content by cybertific

Hawking in his books, "a brief history of time" explains about arrow of time. There is three different kinds of arrow of time: 1. Thermodinamic time. The direction in which disorder or entropy increases 2. Cosmological time. This is the direction of time in which the universe is expanding rahter...

as I know, they both explain about how gravitation work. But how they different? which one is the most correct?

photon not only refer to visible light, but also to all electromagnetic wave.

gravitation is a force. space time curvature in general relativity is just a tools to explain in another way

Gravity is one of four fundamental force in this universe besides strong, weak and electromagnet. If you ask, how those forces work, then each force do has a force carrier particle. For electromagnet is photon, strong is gluon, weak is vector bosons and gravity is graviton.

I agree that wave length and c are change depend on the medium. Wave length will be shorter in a denser medium such as water than in the air, but frequency will be same both in water and in air. Thus, if color depend on wave length, then a color that we see in air and in water will be...

No, this is not about that. Think about the application of this technique. If we can separate mixed sound into each component, we can build a very effective speech recognition. But first we need voice recognition. People usually misunderstand about speech recognition and voice recognition...

I think Fourier transform is not enough. Because for example if we mix c tone from piano and c tone from violin the frequencies is same. But the sound is different. I think we need more than frequencies domain to recognize it. Template matching may be work for verification or identification the...

For example: in a song, there is some instrument like guitar, piano, violin and singer voice. How to separate them ? how we can get the individual sound? human can easily understand them, that in that song is consist of several instrument and a singer voice. But how exactly we do that...