- #36
Prof Sabi
- 33
- 4
From Kolkata I also witnessed it :) BTW our chemistry sir was kind enough to give us a ten minute break to see it.. It was a bit hazy though and not so big as said on the web
Jonathon Groubert said:This is a scientific forum. I would ask that people not introduce pseudo-science into it.
Welcome to PF.Jonathon Groubert said:This is a scientific forum. I would ask that people not introduce pseudo-science into it.
If you were scientific you would have specified if that difference was in diameter or area. If your 7% specified diameter, then the area in steradians would be 14% greater. Applying the inverse square law explains why a full moon at perigee give people on Earth significantly more moonlight than usual. That is probably important for hunters, thieves, military operations and romantic poets.Jonathon Groubert said:More to the point, the difference in size between a stupidmoon, oops, "supermoon" and a regular full moon is 7%.
It is not meaningless when it serves to highlight the differences between the many different calendars used on Earth. Prediction of astronomical observations require several intelligent calendar conversions.Jonathon Groubert said:"Blue" means that the it is the second full moon in a calendar month. This is utterly meaningless to astronomers.
Blood refers to the colour of the light reflected from the Moon. The fact that the light has been refracted by the Earth's atmosphere, with a greater scattering loss at the blue end of the spectrum, is quite an interesting observation, and leads to discussion of rainbows.Jonathon Groubert said:"Blood" means that there is a lunar eclipse occurring. It's more scientifically correct to simply say that than to start using the word blood.
Thread closed for 25ns for Moderation...Jonathon Groubert said:Sorry, not sorry, dave; I calls 'em likes I sees 'em.
Pseudo-science BS has NO PLACE on a scientific forum like this. NONE. As an astronomer, I have had it up to here with this constant barrage of pseudo-scientific nonsense. It is dumbing down our country. I refuse to hold back in calling it out wherever I can.
Wrichik Basu said:Have a look at this video:
Panasonic make a range of digital cameras. What does "60X"mode mean - really? 60 times what? 60 times the size of an object when shot at the widest zoom. But what would that have been? The best you can probably do is print the full frame with the moon in the middle and some object of known size on the ground if you want to indicate the size. Then print the same picture for a non-super Moon.Wrichik Basu said:It's a Panasonic digital camera.
Read this: https://www.panasonic.com/middleeas...gital-cameras-point-shoot/dmc-fz70.specs.htmlsophiecentaur said:Panasonic make a range of digital cameras. What does "60X"mode mean - really? 60 times what? 60 times the size of an object when shot at the widest zoom. But what would that have been? The best you can probably do is print the full frame with the moon in the middle and some object of known size on the ground if you want to indicate the size. Then print the same picture for a non-super Moon.
To be honest, though, sometimes the apparent size of a setting Moon can be unbelievably huge. You have to do the extended finger test to re-calibrate your perception of angle subtended.
Thanks. As I thought, that's the range of zooming. As far as the Moon images go, it's fairly arbitrary as 60X is not going to be Angular Magnification compared with a standard human eye. Actual size of an astronomical image can only be described in terms of angle subtended.Wrichik Basu said: