Mar27 - SUNDIAL OBSERVING PROJECT...

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SUNDIAL OBSERVING PROJECT www.sundials.co.uk/projects.htm Small-scale, rickety, or shoddy sundials are completely unacceptable. Make them sturdy and at least 3-feet in size. Describe how you correct for The ‘Equation of Time’ How to find north? Use a compass, Polaris, a map, or all three. http://www.wsanford.com/~wsanford/exo/sundials/shadows.html • Tidal forces become huge: – You’ll get strung out lengthwise – You’ll get compressed in width Nothing at R BH : – You won’t smash into anything – You’ll just pass through and never know it – You’ll just keep falling until you get to the center WHAT HAPPENS WHEN YOU FALL INTO A BLACK HOLE?
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LIGHT BENDS A LOT, SO THINGS WILL LOOK DISTORTED See http://antwrp.gsfc.nasa.gov/htmltest/rjn_bht.html • Looks like things in rest of the Universe are speeding up – As you approach the event horizon, you’ll ‘see’ the future for all time • The light from above will be blue-shifted – As you approach the event horizon, you’ll ‘see’ only x-rays and
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Mar27 - SUNDIAL OBSERVING PROJECT...

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