Visit ilectureonline.com for more math and science lectures! In this video I will explain the difference between sidereal month and synodic month.
Пікірлер: 125
@zanthoxylum_armatum5 жыл бұрын
One of the best explanations anyone can find about this topic well done..and thanks
@KalikoTrapp4 жыл бұрын
This was really excellent, Michel. Thank you for such a simple explanation!
@davechurch16614 жыл бұрын
the drawing helps. especially with the line up of stars
@sloanbell96736 жыл бұрын
Great explanation Michel! Thank you very much for keeping it short and simple!
@Noblepilot_abrahamvwi_aeroplan2 ай бұрын
Brilliant! Beautiful!! I've never understood it as explained here.
@MichelvanBiezen2 ай бұрын
Glad you enjoyed it!
@Ben342010 жыл бұрын
This video is great! We're just finishing our chapter 3 (The Cycles of the Moon) and I was looking for other videos made by teachers to share with my students. This one is very well done! Just wanted to say thanks.
@MichelvanBiezen10 жыл бұрын
Ben, Thanks for letting me know. Have fun teaching astronomy to your students.
@ahmedalharajin5751 Жыл бұрын
best explanation seen, all appreciation
@MichelvanBiezen Жыл бұрын
Thank you. Glad you like the videos.
@ChrisGaviria26 жыл бұрын
Excellent demonstration, now I understand the difference which other videos explained in a very complicated way.
@paolamendez67148 жыл бұрын
You are awesome! You explained it very well. Thank you!
@pranaymathur914 жыл бұрын
Sir you are totally awesome. The way you explain the concepts is so comprehensive. Being an astronomy lover, I thank you from the bottom of my heart for making these videos and explaining the concepts in a lucid way🙏
@sandyv72647 жыл бұрын
Very helpful and well explained. Many thanks.
@himanshushakya28334 жыл бұрын
Very helpful, thanks for understanding in very simple language and very simple way. Thanks
@saraboushi27545 жыл бұрын
I was exremely confused until i saw this video. Many thanks!
@rabulislam25984 жыл бұрын
Me too. His explanation was terrific.
@tapeshvashisth48026 жыл бұрын
waoooo........you have explained nicely and made it so easily.....thankyou
@stephenlaporte71113 жыл бұрын
This was beautifully explained! Thank you!
@MichelvanBiezen3 жыл бұрын
Glad you enjoyed it!
@kartikamarjeet20826 ай бұрын
Great explanation, Sir!
@MichelvanBiezen6 ай бұрын
Thank you. Glad you liked it
@kartikamarjeet20826 ай бұрын
@@MichelvanBiezen 🙂🙂🙂 Welcome, Sir!
@user-vj2et1ch3r6 жыл бұрын
You are the best! It really helped me a lot. From Korea.
@MichelvanBiezen6 жыл бұрын
Welcome to the channel
@AceMoreno7 жыл бұрын
Excellent explanation!, i needed it!
@sorouppokhrel86702 жыл бұрын
Best explanation! Thank you
@MichelvanBiezen2 жыл бұрын
Glad you think so!
@jonathanrichards50245 жыл бұрын
Best video on this subject on youtube, gosh everything else was terrible.
@patrickconnors22152 жыл бұрын
YOU ARE AWESOME! THANK YOU!!!!
@MichelvanBiezen2 жыл бұрын
Thank you. Glad you like the videos!
@Morajah2 жыл бұрын
So well explained! Thank you! Now I understand it :)
@MichelvanBiezen2 жыл бұрын
Glad it was helpful!
@ellier76199 жыл бұрын
Perfect! Thanks...
@Parijatyadav8 жыл бұрын
great work....great help!!!
@sarahbrand8682 жыл бұрын
Thank you so much! This helped me A LOT!!
@MichelvanBiezen2 жыл бұрын
Glad it helped!
@ujwval4 жыл бұрын
Second explanation that i found on youtube... and this was the first one to clear my doubt. You are a genious sir. So could we call Sidereal month as one revolution of the moon??
@MichelvanBiezen4 жыл бұрын
Since "sidereal" time means time relative to the fixed stars, a sidereal month for the Moon means the time the Moon takes to make 1 revolution. The Moon needs to travel a few days farther to go through a complete lunar cycle due to Earth's motion around the Sun.
@susma82418 жыл бұрын
this helped, thank you very much :)
@hirdayladhyani75723 жыл бұрын
You're a great teacher!
@MichelvanBiezen3 жыл бұрын
Thank you! 😃
@upendrakumarshukla-di9zs2 жыл бұрын
Very nice classes
@MichelvanBiezen2 жыл бұрын
Glad you are enjoying the videos! 🙂
@katherinegeorge81033 жыл бұрын
The best explanation I have seen. Thank you so so much!!
@MichelvanBiezen3 жыл бұрын
Glad it was helpful!
@mdkashif25602 жыл бұрын
Excellent!
@MichelvanBiezen2 жыл бұрын
Glad you liked it!
@mdkashif25602 жыл бұрын
@@MichelvanBiezen Yes, it made the points immediately clear! Thanks! 🙏
@adbraham6 жыл бұрын
Excellent explanation; I now get it; thanks!
@cyan_lord_8 жыл бұрын
Good clarification.
@ajmaj52883 жыл бұрын
So nicely explained!!! Thanks.
@MichelvanBiezen3 жыл бұрын
Glad it was helpful!
@arianethompson-vandevyver76334 жыл бұрын
At last! Got it, thank you very much, very clear
@MLX-bn1mr6 жыл бұрын
Very well explained. Thank you very much.
@satishsativada92328 жыл бұрын
I cleared my doubt. thanks a lot
@jitendradas37764 жыл бұрын
Thank you so much sir
@D_potato_flower4 жыл бұрын
explendid explanation. Couldnt be more clear than this. Thank you very much for the hard work
@CarinaPrimaBallerina2 жыл бұрын
Great explanation. I think I understand it now:)
@MichelvanBiezen2 жыл бұрын
Great. Glad it helped!
@ashutoshsuman94733 жыл бұрын
Simple and Beautiful.🙏
@MichelvanBiezen3 жыл бұрын
Thanks a lot 😊
@rubygupta86924 жыл бұрын
Cool, Thanks to clear this topic so easily
@user-sq4dz1pm5q5 жыл бұрын
Dear Michel I wonder how many thankful comment notifications do you get every day. please share with us. Great videos thanks
@MichelvanBiezen5 жыл бұрын
We do have people from around the world writing to us that our videos have helped them with their studies, and we really appreciate this feedback.
@brindabora21974 жыл бұрын
one of the best explanation. thank you so much
@jamwalprateek4 жыл бұрын
Good explanation
@betaorionis21644 жыл бұрын
Thanks for the video, Michel. Could we say that the moon should have the same right ascension after exactly one sidereal month? I've tried to check that with several planetary software applications and I don't get exactly the same RA after 27d, 7h, 43m and 11,5s. Is it that the different softwares are not perfect or that I have the concept wrong? Thanks a lot.
@angelineprospero65845 жыл бұрын
Wow! Thank you! Well explained
@bjornsahlin9 жыл бұрын
Brilliant, as always Michel!
@chafaon6 жыл бұрын
True what they say about a picture & a 1000 words
@ComputerscienceByMalitha3 жыл бұрын
wow !! You are a life savvier
@MichelvanBiezen3 жыл бұрын
Happy to help
@dezubiriacarolina1447 Жыл бұрын
Thank you!
@MichelvanBiezen Жыл бұрын
You're welcome!
@prabindangwar97095 жыл бұрын
Thank u sir😬
@pvrp935 жыл бұрын
thank you for this. was wondering what is the angle between the two earth positions?
@shhh_neka5 жыл бұрын
I think it would be about a 30 degree angle. I'm not sure though.
@MichelvanBiezen5 жыл бұрын
(360 degrees) x (29.5 days / 365.25 days) = 29.08 degrees
@pvrp935 жыл бұрын
@@MichelvanBiezen thank you for replying, your videos are excellent!
@salimniroula94735 жыл бұрын
Amazing figure explaination sir
@specialrelativity82222 жыл бұрын
thank you.
@MichelvanBiezen2 жыл бұрын
You're welcome
@cotedazure3 жыл бұрын
Thanks, it finally clicked!
@MichelvanBiezen3 жыл бұрын
Glad it did!
@nasibagahramanova59052 жыл бұрын
thanks a lot😍
@MichelvanBiezen2 жыл бұрын
You're welcome 😊
@sa75525 жыл бұрын
Amazing sir
@bimeshbhattarai28645 жыл бұрын
Amazing
@rejiin_7233 жыл бұрын
Thankyou sir🙏🙏
@udaypratapsingh78723 жыл бұрын
Impressive! 👍🏼
@MichelvanBiezen3 жыл бұрын
Thanks!
@jonathanellis56957 ай бұрын
Hi Mike (or anyone)…does this mean then, that the moon phases are not related to the orbit of the moon around the earth (as the 2 cycles are different lengths of time)?
@MichelvanBiezen7 ай бұрын
The phases are related to the Moon's orbit around the Earth, but the difference between the two "cycles" depend on the relationship between the positions of the Moon, the Earth, and the Sun. The Moon revolves around the Earth in about 27.3 days (sidereal month) while the phases of the Moon are on a 29.5 day cycle. (synodic month)
@jonathanellis56957 ай бұрын
Thanks Michel. But I’m still confused. As there are typically 13 orbits in a year, and typically 12 new and full moons in a year, then the phases of the moon cannot be due to the orbits. The numbers should match shouldn’t they?
@MichelvanBiezen7 ай бұрын
They should indeed differ by 1 (exactly), because in one year the Earth travels around the Sun once.
@jonathanellis56957 ай бұрын
I don’t think I’m explaining myself well. I’ll try another question.
@jonathanellis56957 ай бұрын
Hi Michel thank you for all your work. For the sidereal month, do you mean that the moon returns to the same position relative to the stars when using the same viewing point on earth? For example, in your diagram, the viewing point is the arrow on the earth in the 3 o’clock position.
@vigneshwark48745 жыл бұрын
Thank you sir
@jaswinderdhaliwal97514 жыл бұрын
Awesome man
@MichelvanBiezen3 жыл бұрын
Thanks!
@vijendrapandey2988 жыл бұрын
Very helpful. Thanks a lot.
@hananebenselama55036 жыл бұрын
This helped! thanks Michel
@murlecampbell83607 жыл бұрын
At 1:28 how many degrees did you say Michel? Thank you...
@robinspeck31967 жыл бұрын
~30 degrees
@gouti77065 жыл бұрын
Thnx ..very helpful
@elenahobbies95704 жыл бұрын
Thanks 👌
@murlecampbell83607 жыл бұрын
How many more degrees beyond 360 would be equal to 2.2 extra days of travel?
@MichelvanBiezen7 жыл бұрын
You would have to take into account both the motion of the Earth and the motion of the Moon. The Moon travels about 13.2 degrees per day. But the Earth also travels 0.986 degrees per day.
@willoughbykrenzteinburg6 жыл бұрын
As Michel points out, the moon travels about 13.2 degrees per day, so that would be about 29 extra degrees. This makes sense, because in the 27.3 days it takes the moon to orbit the Earth relative to the stars, the Earth (at 0.986 degrees per day) orbits the sun by about 26.9 degrees. It would orbit a little more in the 2.2 days it take the moon to orbit that extra distance. A better way to do this is just to take how many degrees each orbit per day, and figure out how many days pass before they line up again. Knowing that the moon will orbit more than 360 degrees, we know that however far the moon orbits in degrees MINUS 360 should equal the angle the Earth has orbited. We can just use a simple algebraic expression at that point to solve for the number of days until they line up. So : 13.187x - 360 - 0.986x = 0 12.201x = 360 x = 29.5
@divyanshsingh82455 жыл бұрын
loved it so much insane !!!!!.......
@arpittyagi584 жыл бұрын
Thank you Sir ;)
@MichelvanBiezen4 жыл бұрын
You're welcome
@lazesoul91105 жыл бұрын
its help me
@mhdabb955410 жыл бұрын
Thanks
@cinuehernandez21919 жыл бұрын
thanks!
@emmaetheridge86574 жыл бұрын
why are some months sidereal and some synodic?
@MichelvanBiezen4 жыл бұрын
The months are not tied to either the sidereal of synodic months. Instead the number of days assigned to a month was more related to the importance of the person after which the month was named: August = Augustus July = Julius Caesar