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  1. ...some radiation with higher frequency can make electrons emmition. If the frequency is lower than the a value, that will be no electron emmited. The explaination of the photoelectric effect is, there ...

  2. ..., while certain parts will be reduced. Such strange appearance will make you laugh loudly, so is the principle of a fun-house mirror. The use of the combination of concave and convex mirrors...

  3. ... the mass of the earth] Now, a decrease of v makes the term mv^2/r to be reduced, hence, mv^2...09-29 14:25:35 補充: (cont'd...) But a strange thing then happens, when the spacraft is...

  4. ... of energy to have a very inefficient way (compare with... are one type of fundamental particles...anit-particles to make our world. They...2008-06-16 17:04:22 補充: Strangelet is consist by u,d and...

  5. ... well. So, make sure that you know the exact meaning of the variables and the...runner applied is a constant. 2007-06-29 11:27:22... the question is then strange and not realistic. Maybe...

  6. ... the proton is really a u-u-d quark troika while the neutron...one can imagine other baryons made of different quark combinations... the other quarks -- strange , charm , bottom, or top -- are...