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  1. 1. Beas are formed when two waves of nearly the same frequency are brought to interfere with one another. To obtain steady beats, the waves must be of constant frequencies and equal amplitides. Although a...

  2. ...an interference pattern, but only a patch of reflected white light similar to that observed on mirror reflection.

  3. Eleven wave crests are observed on a screen placed below a ripple tank,the total distance between the first...

  4. a. A colour spectrum is observed on the screen. As red light is refracted the least,it is...

  5. The Double Ninth Festival , observed on the ninth day of the ninth month in the Chinese calendar...

  6. Lantern Festival observed on the first full moon in a lunar year; the Feast of Lanterns; the Lantern Festival

  7. ...塞會隨水vibrate. b) Double slit experiment. Interference will be observed on the water surface. At P, destructive interference and at Q, constructive...

  8. ...by time dilation formula T = t / Sqrt(1 - v^2/c^2) 1. When observed on the ground, let t be a time interval of the ground clock, T1...

  9. ...in regard to race, gender and age. As children tend to imitate what they observe , especially on television, discrimination is hardly unexpected from these children; if discrimination...

  10. ... into silver nitrate solution respectively, some silver crystals can be observed on the surface of metals. This show that Zinc , magnesium, iron ...

    分類:科學及數學 > 化學 2010年01月22日