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How Do Sound Waves Travel

Sound waves are produced by a source such as the vibrating diaphragm of stereo speakers. The sound source creates vibrations in the surrounding... View Article

Is Light A Particle

Light behaves both as a particle and a wave. Light has a dual nature: Sometimes it behaves like a particle (photons) which explains why light... View Article

Can Scalar Be Negative

Any scalars that are defined as the magnitude of a vector is non-negative. But, there are some scalars that can be negative. Electric charge is... View Article