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#21
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Marina wrote:
Midsummer is a big deal here in Finland, but we don't get to celebrate it on the actual day, because the holiday has been moved to the weekend, so that Friday is officially Midsummer Eve, though it was really on Monday. Well, at least we get a three-day weekend. I'm taking the cats to the island this weekend Do you have midnight sun where you are? Happy summer solstice to all in the northern hemisphere! (And winter solstice to those in the south.) Joyce |
#22
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Marina wrote:
Midsummer is a big deal here in Finland, but we don't get to celebrate it on the actual day, because the holiday has been moved to the weekend, so that Friday is officially Midsummer Eve, though it was really on Monday. Well, at least we get a three-day weekend. I'm taking the cats to the island this weekend Do you have midnight sun where you are? Happy summer solstice to all in the northern hemisphere! (And winter solstice to those in the south.) Joyce |
#23
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Takayuki wrote:
if the velocity of light through a vacuum is an absolute constant, and velocity is always relative, then do two photons traveling towards each other have a relative velocity of C (the speed of light) or 2C (twice the speed of light)? I don't think photons have relative velocity - that's the theory of special relativity. Everything else is relative, but light speed is constant. But I find that, even though I have a good head for science in general, relativity theory is totally mind-boggling to me! So I might have that somewhat wrong... Joyce |
#24
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Takayuki wrote:
if the velocity of light through a vacuum is an absolute constant, and velocity is always relative, then do two photons traveling towards each other have a relative velocity of C (the speed of light) or 2C (twice the speed of light)? I don't think photons have relative velocity - that's the theory of special relativity. Everything else is relative, but light speed is constant. But I find that, even though I have a good head for science in general, relativity theory is totally mind-boggling to me! So I might have that somewhat wrong... Joyce |
#25
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Takayuki wrote:
if the velocity of light through a vacuum is an absolute constant, and velocity is always relative, then do two photons traveling towards each other have a relative velocity of C (the speed of light) or 2C (twice the speed of light)? I don't think photons have relative velocity - that's the theory of special relativity. Everything else is relative, but light speed is constant. But I find that, even though I have a good head for science in general, relativity theory is totally mind-boggling to me! So I might have that somewhat wrong... Joyce |
#26
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#27
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#28
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#29
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wrote Marina wrote: Midsummer is a big deal here in Finland, but we don't get to celebrate it on the actual day, because the holiday has been moved to the weekend, so that Friday is officially Midsummer Eve, though it was really on Monday. Well, at least we get a three-day weekend. I'm taking the cats to the island this weekend Do you have midnight sun where you are? No, not quite. The sun sets for a few hours here in southern Finland, but up north it shines all through the night. To my shame I must confess that I've never seen the midnight sun. -- Marina, Frank and Nikki Email marina (dot) kurten (at) pp (dot) inet (dot) fi Pics at http://uk.f1.pg.photos.yahoo.com/frankiennikki |
#30
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wrote Marina wrote: Midsummer is a big deal here in Finland, but we don't get to celebrate it on the actual day, because the holiday has been moved to the weekend, so that Friday is officially Midsummer Eve, though it was really on Monday. Well, at least we get a three-day weekend. I'm taking the cats to the island this weekend Do you have midnight sun where you are? No, not quite. The sun sets for a few hours here in southern Finland, but up north it shines all through the night. To my shame I must confess that I've never seen the midnight sun. -- Marina, Frank and Nikki Email marina (dot) kurten (at) pp (dot) inet (dot) fi Pics at http://uk.f1.pg.photos.yahoo.com/frankiennikki |
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