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  1. Alpha radiation has a low penetrating power, it is not strong enough to pass... to monitor the volume of milk in the box. Therefore, Beta radiation is suit ...

  2. ...photon given out. This, of course, leads to a stronger radiation beam. The relation between the intensity of radiaiton and the activity is not...

  3. ... the speed of electromagentic wave be 3 x 10^8 m/s Hence, frequency of radiation = 3x10^8/(3/100) Hz = 10^10 Hz = 10 billion Hz 2014-07-24 17...

  4. radiation係指以electromagetic(EM) wave電磁波傳播能量 所謂EM wave係由electric field...

  5. ...the contrary, if the inner surface is also painted black, heat transfer by radiation would become more effective. The temperature of air inside the box ...

  6. Recently, it is said by biologists that radiation of cell-phone will kill male gametes and reduce semen concentration. ...

  7. ...可能吸收多d太陽的熱力 所以可以保暖 2:熱茶因為比出面的環境熱所以能量會藉radiation 向surrounding 散失. 而白色是poor emit 所以能夠減少能量向4周散失... ...

  8. ...convention) 3) 2006-12-16 20:24:43 補充: http://www.freewebs.com/3s1physics/radiation.htm

  9. Wearing black cloths could lose heat betterthan white clothes is true if and only if you are staying in an environment at temperature lower than your body ...

  10. Fever is a reaction to invaders. When your immune system is fully charged up against a disease, it requires a lot of energy to produce fire arms e.g. white ...

    分類:科學及數學 > 生物學 2006年11月22日