Author Topic: General relativity  (Read 477 times)

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Offline _schizo321437

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General relativity
« on: October 05, 2014, 01:51:45 pm »
+6
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Al-Biruni (973-1048); illustration depicting a lunar eclipse and different phases of the moon, from the Kitab al-Tafhim (in Persian).

"The subtitled comment:
فارسی: جایگاه‌های مختلف ماه در کتاب التفهیم اثر ابوریحان بیرونی. متن زیر تصویر:

جِرَا جرا این فزودن و کاستن نور قمر را است و ستارکان دیکر را نیست
میان مردمان نکرستن و ناستذنْ این مَعْنیها را خلافَسْت
در روشناای ستارکان که ایشانرا روشناای از خویستن است

Translation:

Why – why the increase and decrease of the light of the moon is settled while other stars don’t behave so,
observing these and not understanding the spirit of these is a misdeed
that the light of the stars is of their own"




This an observation of gravitational lensing. What do you think?
銃を積んだすがだ
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Bugün foto

Offline Christo

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Re: General relativity
« Reply #1 on: October 05, 2014, 02:08:01 pm »
+1
allahu akbar
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                                                                                            Thanks to cmpxchg8b for the picture!

Offline _schizo321437

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Re: General relativity
« Reply #2 on: October 05, 2014, 04:24:53 pm »
+2
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銃を積んだすがだ
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Offline Radament

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Re: General relativity
« Reply #3 on: October 05, 2014, 05:00:07 pm »
+1
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