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  1. H

    how do space telescopes and radio telescopes operate differently and use different...

    ...optical/light components? I am doing a science assignment on light and i have to investigate and compare two devices that use light for a similar basic purpose, however, operate differently and use different optical/light components to achieve a specific task. please help! and provide the source!
  2. H

    Is the Blackberry bold 9870 better than the curve 8250?

    I am looking to buy my first blackberry. I looked on phones 4 u and there are some good deals on vodafone. Theres a contract which is £25 for unlimited texts, 500min and 500mb of 'data'. Does this 'data' mean internet? and i take it things like BBM come with the blackberry itself? I am a great...
  3. H

    Is the Blackberry bold 9870 better than the curve 8250?

    I am looking to buy my first blackberry. I looked on phones 4 u and there are some good deals on vodafone. Theres a contract which is £25 for unlimited texts, 500min and 500mb of 'data'. Does this 'data' mean internet? and i take it things like BBM come with the blackberry itself? I am a great...
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