Best teacher , and the best channel to learn astronomy

Great video. Oddly satisfying to watch this...

Honestly a life saver!!

great video!

Thanks! Don’t stop!

Sir, my favourite subject is history and I start reading astrophysics recently. I find your video easy to understand. Thanks

@MichelvanBiezen

3 жыл бұрын

You are most welcome

i wanted to learn how to calculate the magnitude of a star and now I know, thanks for the explanation.....Beautifull explanation

@MichelvanBiezen

3 жыл бұрын

Happy to help

Great videos! Thanks for the refresher :)

Where do you get the number 2.512 from when doing the brightness difference calculations? Great video btw 👍🏻

@MichelvanBiezen

4 жыл бұрын

That number was chosen (not by me) so that 2.512^5 = 100 by design.

How do you find the flux ratio if you are only given the magnitude of one star? Im trying to solve this question and am very confused. If we have a two identical stars and one is twice as far, and the close stars apparent magnitude is +5 how do we know the magnitude of the other star? I don't understand how I should find the flux ratio if I'm only given one apparent magnitude. The apparent visible magnitude of the closer star is +5. What is the apparent visible magnitude of the more distant star?

@MichelvanBiezen

3 жыл бұрын

They are identical stars so they have the same absolute brightness. If one is twice as far, the intensity will be 1/4. Then you take 2.512^m = 4 (for the close one being 4 time brighter). Take the ln of both sides and you get m ln(2.512) = ln (4) solve for m and you get 1.5 That means the far star has an apparent magnitude of 5 - 1.5 = 3.5

Teacher Mattersssssss... Thank you for the awesome explaination.

@MichelvanBiezen

3 жыл бұрын

Glad it was helpful!

@manisky9026

3 жыл бұрын

@@MichelvanBiezen Thank You :)

this is so helpfull thanks :-)

@MichelvanBiezen

3 жыл бұрын

Glad it was helpful!

What is v band magnitude?

i love u

@MichelvanBiezen

2 жыл бұрын

We are glad you like our videos! 🙂

but...lunar magnitude......w.ist..in this..all....