Recent content by edwin2b

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    Does anyone know the ionic radius of hydride(anion of hydrogen)?

    I come from Hong Kong and want to know the ans. THX very much! Also curious to know, which nationality will browse this forum most?
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    Grade K-12 vs College Level: Age & Differences

    oic...thanks
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    45' 90' 45')prism will form a laterally inverted image

    Is it correct ...??
  4. E

    45' 90' 45')prism will form a laterally inverted image

    but the prism has 3 sides.. they will do total internal reflection.. the following is the description of my drawing at home: I found that if two parallel light rays is total internal reflected by only one side of the prism..the image will be laterally inverted(just like a mirror) and...
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    Grade K-12 vs College Level: Age & Differences

    hihi.. I can't using the avatar but the other one does..why??please hlep me.. What is the difference between the Grade K-12 and College Level ..?? What age are they for..?? I am not knowing those because I come from HK..
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    45' 90' 45')prism will form a laterally inverted image

    um..let's put in this way.. I know the (45' 90' 45')prism will form a laterally inverted image or only a inverted image... But when will the such condition happen..?? i.e. when will the laterally inverted image form out and also the inverted image.. What elements should be satisfied to form...
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    45' 90' 45')prism will form a laterally inverted image

    How many kinds of nature of image formed by a (45 degrees,90degrees,45degrees) prism are there...?? Can you tell me all in detail...??thx a lot.. :smile:
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