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Can Light Travel Forever

Light is an electromagnetic wave that doesn’t need a medium to propagate. The strength of the wave, however, can get... View Article

There are two theories of light. In the seventeenth century, two contradicting theories of the nature of light were proposed:... View Article

The diffraction of waves is the phenomenon in which the waves spread out as they pass through an aperture or... View Article

Wavelets are wave-like oscillation with an amplitude that begins at zero, increases, and then decreases back to zero.

The attractive forces in solid particles keep them together tightly enough so that the particles do not move past each... View Article

In thermodynamics, an adiabatic process is one in which there is no exchange of heat between the system and its... View Article

In certain conditions, a spinning ball deflects in a direction contrasting to that predicted direction by the Magnus effect, which... View Article

Ideal gas laws describe the relationship between temperature, pressure and volume for a combination of ideal gases. The ideal gas... View Article

Diodes are semiconductor devices that allow current to flow through a single direction only. Based on the applications, there are... View Article

The density of an ideal gas depends on the molecular weight, temperature and pressure of the system. From ideal gas... View Article

The image of an object is the location where light rays from that object intersect upon reflecting from a mirror.... View Article

The shape of the equipotential surface due to a single isolated charge is concentric circles. The distance between the shells... View Article

Kinetic theory of an ideal gas is based on a simplified molecular or particle description of a gas, from which... View Article

Solution: (1) n (A) > n (B) n (A) – n (B) > 0 n (A) – n (B) ≤... View Article

1) {{3}, {2,3}, {1,3}, {1,2}, ϕ } 2) {{3}, {2,3}, {1,3}, {1,2,3} } 3) {{3}, {2,3}, {1,3}, {1,2,3}, ϕ} 4)... View Article

Solution: (4) A = {36, 99, 216 …. } 23 + 33 + 43 = 8 + 27 + 64... View Article

Solution: (1) 4x2 + 9y2 – 32x – 54y + 109 ≤ 0 4 (x2 – 8x) + 9 (y2... View Article

Solution: (3) A = {x : x2 = 1} x2 = 1 x = ± 1 A = {-1 ,... View Article

Solution: (1) The number of possible different newspapers = 300 x 5 = 1500 newspapers If every newspaper is read... View Article

Solution: (2) (S1 * S2) consist of 20 * 4 = 80 elements (S1 * S3) consist of 20 *... View Article