Watched this to better understand Kepler's 3 laws of planetary motion. I was happy to see that I generally understood them without the visuals (yay!), but the visual and explanations made it all the more clear (especially the math calculations.) Thanks for a great video!
Like most people in the comments I'm also studying for a test I have tomorrow, though for me it's an aerospace engineering test rather than a physics one. This video explained the three laws really well, my professor tends to jump into the maths before making sure we have a good grasps of the basics of what's going on!
Due to unfortunate 3 fractures in my leg I'm not being abe to go to school and our teacher was teaching kepler's laws..I had the notes but didn't quite understand them and coudln't ask my teacher as i couldn't go to school..This video is excellent! Thank You! Liked👍
Very clear, partly because the explanation does not skip any steps of reasoning. That is particularly helpful when it comes to the explanation of Kepler's third law. Excellent!
Wow great job! this video helped me SOOOOOOO much in writing my paper on Kepler's three laws! Very clear and understandable! Thank you really appreciate it
very well explained...i could'nt understand while i was reading from my text book...but now after watching this video i totaly understand...thank u soo much.
Absolutely amazing for the sake of simplicity itself. Thank you so much for the video. This really helped my understanding of Keplers Law and the good thing is, you just summarize a 1 hour confusing lecture to a 12 minute of clear and understandable video. Thank you once again sir.
Thank you for the clarity. I have a discussion on Kepler's laws and I find it a lot more understandable with the illustrations. thanks for the help again.
Hi dcaulf, When discussing Kepler's 3rd law, I believe you have the orbital radii for the Earth and Jupiter in units of meters when it should be in kilometers. Although this doesn't change your answer because the units will cancel, but I figured I should let you know. Thanks for the video!
this video was really helpful because it described everything really well and you can understand everything. compared to other videos the are to complicated
He stole all astrological maps and calculations made by tycho Brahe and than he stated seeing relations in them which after 11 years of studying all the maps and calculations he concluded all of them in three simple laws..."the Kepler's laws"......he was a true genius mate...bcz of Kepler even gallilieo could have visualised space
Please note that the values given in the video for the mean solar radii of both Earth and Jupiter are correct if the units are kilometers (km), NOT meters. Earth's mean orbital radius from the Sun is 1.5x10^11 m = 1.5x10^8 km. Because a ratio is being used in Kepler's 3rd Law, the effect of these two errors cancel each other out.
Excellent video,It just struck me at 6:40 that the reason we don't feel the acceleration in earth's version of this orbit is,as the earth draws nearer to the sun the Earth's spin is both a product of this acceleration and a counter to it,,,That is to say the extra gravity and motion causes the Earth to spin through centrifrugal force and the spin naturally cushions the surface from inertial differences. The sum of gravitational action from all orbiting bodies in the solar system also keep the sun spinning not to mention the complicated interrelated gravitational effects on the perfect clock we call the solar system...Thanks for posting Would like to hear your views,and corrections on this statement.
A wonderfully clear and concise explanation. Thank you so much. I am awed by patterns and fractals and stuff like that, so the beauty of the equal areas created by the variable orbit speed has me really humming.
Thank u for your vids. One thing that i find slightly troubling is that kids are taught that th planets orbits are eliptical using exaggerations, so they never truly appreciate how incredibly circular they are. If one were to draw a perfect representation of earths path with a 200mm major axis, and on a transparancy draw a circle 200mm dia, one figure could not be distinguished from th other, even with a ruler.(earths major axis is 99.986% of its minor: so on our drawing, no point on th circle>>
Question: If elliptical orbits are slices of cones what is at the apex? It seems that it describes a motion akin to particles being emitted from a point. In this case, the planetary bodies are the particles and the emanation point would be located at the apex of the imaginary cone. I assume one could calculate the distance and location of the apex. I'm wondering what the point is? Is it the gravitational center of our galaxy, or is indicative of some other event that may have caused our solar system? I've searched for various explanations of Kepler's and Newton's explanation of orbital dynamics, but there seems to be no focus on the actual cone geometry and an explanation of why that is the case. Anyone out there have any ideas?
Thank you very much dcaulf.Your video expaination helped me alot to properly understand Kepler's 3 laws of Motion.i have one of my National Astronomy Olympiads coming and i needed to understand the topic serioulsy & if I would win I would get a trip to NASA for 10 days.if it would happen so I would credit you for helping me.Thanks again :D
It's a bit counter intuitive that when the ellipse was first explained you placed 2 focal points but then in the real world there has to be only one massive objects at one of the focal points and it has the same effect. Can someone explain this?
Oh jeez, it recently came up among my friends that the Earth is closest the the Sun in January and furthest in July and we were confused why the distances weren't three months apart. (I was thinking of our orbit being an ellipsis centered on the Sun.) We decided maybe that it's 'cause of Jupiter and the Moon mucking things up, but it didn't make sense that that'd be stable on a human timescale. Thanks for this explanation.
Thank you! Though I cannot fully understand the first law and also how did Kepler discover that the speed of the planet increases when it is closer to the focus?
Hi! Thx for the video. I have a question about Kepler's first law: isn't it possible that the initial speed of the planets was to high (instead of to low like you illustrate) to make a perfect circle. In that case the orbit is also elliptical.
Hmm. So there is no corrective period? It's immediately and always in the same orbital path that it followed the first time it shot back around the larger object?
Hey I have a question, using this equation v=2PIr/T wouldnt the object move faster the further it is from the planet? why is it here that the closer it is the faster it moves?
Studying for a physics test I have tomorrow, thanks for explaining this better than my professor did in half the time.
Agreed
@@danielmuzza5125 I passed that test 5 years ago btw...
Good luck!
P.S: I work full time as a software engineer now at AMD.
@Isac Casas This was 5 years ago, so it was first year University.
@@haloshadowsnipe3014 this makes me kinda depressed
@@Time4me2change Why?
Watched this to better understand Kepler's 3 laws of planetary motion. I was happy to see that I generally understood them without the visuals (yay!), but the visual and explanations made it all the more clear (especially the math calculations.) Thanks for a great video!
Thanks man, the class I'm in wouldn't shut up so we have to take notes on these laws at home.
Like most people in the comments I'm also studying for a test I have tomorrow, though for me it's an aerospace engineering test rather than a physics one. This video explained the three laws really well, my professor tends to jump into the maths before making sure we have a good grasps of the basics of what's going on!
Thanks for this video, we are learning about this in Astronomy;my teacher didn't articulate this very well.
Due to unfortunate 3 fractures in my leg I'm not being abe to go to school and our teacher was teaching kepler's laws..I had the notes but didn't quite understand them and coudln't ask my teacher as i couldn't go to school..This video is excellent! Thank You! Liked👍
very well done explaining, but I did keep getting distracted by the hilarious subscript.:))
Very clear, partly because the explanation does not skip any steps of reasoning. That is particularly helpful when it comes to the explanation of Kepler's third law. Excellent!
You , Sir , are awesome !!
WOW! For something that I found difficult to understand this video has made everything simple.
Thanks =D
Wow great job! this video helped me SOOOOOOO much in writing my paper on Kepler's three laws! Very clear and understandable! Thank you really appreciate it
very well explained...i could'nt understand while i was reading from my text book...but now after watching this video i totaly understand...thank u soo much.
OMG, this was an absolute LIFE SAVER. thank you for your help with the second law. that one literally kept me up at night.
Absolutely amazing for the sake of simplicity itself. Thank you so much for the video. This really helped my understanding of Keplers Law and the good thing is, you just summarize a 1 hour confusing lecture to a 12 minute of clear and understandable video. Thank you once again sir.
I understood the first two but the third was kind of confusing. Thanks for the informative video. It's appreciated!
1:09 we are looking at an ellipse, most likely Baymax lol!
exactly what I thought!!
hahahaha
Thank you for the clarity. I have a discussion on Kepler's laws and I find it a lot more understandable with the illustrations. thanks for the help again.
Great explanation. Thanks for sharing your vid.
Hi dcaulf, When discussing Kepler's 3rd law, I believe you have the orbital radii for the Earth and Jupiter in units of meters when it should be in kilometers. Although this doesn't change your answer because the units will cancel, but I figured I should let you know. Thanks for the video!
I should have watched this before class, would have saved me a lot of frustration...thanks!!
I really love your explanation of keplers 1st and 2nd law but the 3rd one was confusing
Thanks for explaining way way better than my teacher did.
this video was really helpful because it described everything really well and you can understand everything. compared to other videos the are to complicated
You explained this very well. I watched a few others and just didn't get that third one, but you make it so clear. Thanks so much.
Absolutely brilliant. This video is worth more than a thousand words.
very professional. what software did you use to create this?
he stated it in the video. Listen carefully
can you please explain how Kepler arrived at these conclusions....
He stole all astrological maps and calculations made by tycho Brahe and than he stated seeing relations in them which after 11 years of studying all the maps and calculations he concluded all of them in three simple laws..."the Kepler's laws"......he was a true genius mate...bcz of Kepler even gallilieo could have visualised space
Brahe might have a genius but he was also batshit crazy.
Please note that the values given in the video for the mean solar radii of both Earth and Jupiter are correct if the units are kilometers (km), NOT meters. Earth's mean orbital radius from the Sun is 1.5x10^11 m = 1.5x10^8 km. Because a ratio is being used in Kepler's 3rd Law, the effect of these two errors cancel each other out.
You made the 3rd law seem mathematically simple. Thank you sir.
the best explanation ever!!
Better than my teacher!!
Fantastic explanation. Studying up for a final, and this made it crystal clear. Really appreciate the work you put in.
The way you explained the 3rd law is very helpful
thank you
Excellent video,It just struck me at 6:40 that the reason we don't feel the acceleration in earth's version of this orbit is,as the earth draws nearer to the sun the Earth's spin is both a product of this acceleration and a counter to it,,,That is to say the extra gravity and motion causes the Earth to spin through centrifrugal force and the spin naturally cushions the surface from inertial differences.
The sum of gravitational action from all orbiting bodies in the solar system also keep the sun spinning not to mention the complicated interrelated gravitational effects on the perfect clock we call the solar system...Thanks for posting
Would like to hear your views,and corrections on this statement.
beautiful explanation, hopefully professors are just as good at explaining this as you are.
I am studying for my final sem tomorrow...thanks for the video.
Thank you so much for making this video. I learned more in twelve minutes that I have through hours and hours of textbook reading. Bless you! :)
A wonderfully clear and concise explanation. Thank you so much. I am awed by patterns and fractals and stuff like that, so the beauty of the equal areas created by the variable orbit speed has me really humming.
On the plus side, it is a very helpful video and I have recommended it to all my Astro students. Nice job!
Earl
great explanation! I read it on textbook, wasn't able to understand. But yours is super clear to understand👍
is the semi major axis the same thing as orbital radius?
yes
falconsatl11 Falcons blew a 28-3 lead
Thank u for your vids. One thing that i find slightly troubling is that kids are taught that th planets orbits are eliptical using exaggerations, so they never truly appreciate how incredibly circular they are. If one were to draw a perfect representation of earths path with a 200mm major axis, and on a transparancy draw a circle 200mm dia, one figure could not be distinguished from th other, even with a ruler.(earths major axis is 99.986% of its minor: so on our drawing, no point on th circle>>
The best explanation so far ! Thanks
WOW! THANKS! I CAN PASS MY ASTROLOGY TEST TODAY NOW!
Thank you for a very instructive video. Your animated graphic helps so much. May I ask what software you used?
thank you so much for the video. i read my book and watch several videos and yours is clear and concise.
Great video, I finally understood Kepler's laws after watching this video. Thx!
Question: If elliptical orbits are slices of cones what is at the apex? It seems that it describes a motion akin to particles being emitted from a point. In this case, the planetary bodies are the particles and the emanation point would be located at the apex of the imaginary cone. I assume one could calculate the distance and location of the apex. I'm wondering what the point is? Is it the gravitational center of our galaxy, or is indicative of some other event that may have caused our solar system?
I've searched for various explanations of Kepler's and Newton's explanation of orbital dynamics, but there seems to be no focus on the actual cone geometry and an explanation of why that is the case.
Anyone out there have any ideas?
Thx for making this, it was very helpful. (especially the 3rd law)
Thank you so much for this video! I have come to understand Kepler's three laws more thoroughly it.
Studying for an Astronomy test. thanks for the help!
Thank you very much dcaulf.Your video expaination helped me alot to properly understand Kepler's 3 laws of Motion.i have one of my National Astronomy Olympiads coming and i needed to understand the topic serioulsy & if I would win I would get a trip to NASA for 10 days.if it would happen so I would credit you for helping me.Thanks again :D
Why would the orbit become elliptical when velocity is reduced? Please explain.
wow thank you so much. ..I HAVE FULLY UNERSTOOD IT .That was really helpful
My current grade in astronomy is a 50. The semester is over in December, this is October 2020, i need a miracle
This is seriously an amazing video and held me understand Kepler's Laws so much better. Thank you so so so much! :)
Very Simple and Simply Great video
what is orbital period? the amount of time time it takes to take one *turn*?
Thanks for posting. You broke it down real simple.
Wow! Best video on youtube that explains these laws! You really helped me study for my physics test tomorrow!! Thanks! :)
Thanks alot... you have cleared my concepts. upload more and more vedios of physics.
It's a bit counter intuitive that when the ellipse was first explained you placed 2 focal points but then in the real world there has to be only one massive objects at one of the focal points and it has the same effect. Can someone explain this?
very good explanation!!! you made it simple to understand!!
nice,it really help me in prepare myself before doing the presentation for this topics..
Thank you so much for this awesome explanation!! It helped incredibly!!
Thanx a bunch. Appreciate your kindness. :)
Oh jeez, it recently came up among my friends that the Earth is closest the the Sun in January and furthest in July and we were confused why the distances weren't three months apart. (I was thinking of our orbit being an ellipsis centered on the Sun.) We decided maybe that it's 'cause of Jupiter and the Moon mucking things up, but it didn't make sense that that'd be stable on a human timescale. Thanks for this explanation.
very good one for people who think slow... or English isn't their first language. thx :)
Thank you!
Though I cannot fully understand the first law and also how did Kepler discover that the speed of the planet increases when it is closer to the focus?
pure logic I think
+Mr. cake Thank you,but I wanted to know a simple explanation of the "logic".
Vanshika Sood if you think about it, the closer the object is, the greater the gravitational acceleration, and therefore, the object will move faster
This helped me so much with my extra class ham radio test
How can one calculate the orbital radius in Keplers 3rd Law?
What determines the initial orientation of the focal point and the satellite; masses?
Thank God for this very helpful video!
Hi! Thx for the video. I have a question about Kepler's first law: isn't it possible that the initial speed of the planets was to high (instead of to low like you illustrate) to make a perfect circle. In that case the orbit is also elliptical.
If there are two foci and one is the central object, what is the second one?
thanks a lot !!! now i know about these 3 laws ..!!!
clearly explained 1 students liked much. I am from Bhaktapur Nepal
Tysm this was so easy to follow
Just wanted to say thank you for this video.. great info, nice explaination and pacing of the info. Thanks!
Thanks a lot sir i'm gonna ace my gravitation test tom!
Hmm. So there is no corrective period? It's immediately and always in the same orbital path that it followed the first time it shot back around the larger object?
Thank you! I just couldn't figure out that third law! But this worked well for me
this helps my science project thanks :)
Excellent explanation - thank you
Explained better than my professor
Very good narration....
Thankyou! I get it now, but what is the constant approximately? Everyone says something else.
Is there a link to the website where you get the demonstrations? If so, will you please post it.
Excellently Explain Sir...Thanks for uploading
Thank you so much! Got an A in my test!
GREAT JOB!! Very clear video! I really appreciate it!
Um, hey, I love your videos! I just thought you should know that... Also, I think this is the best Kepler's Laws video on UA-cam.
Hey I have a question, using this equation v=2PIr/T wouldnt the object move faster the further it is from the planet? why is it here that the closer it is the faster it moves?
not sure if anyone else had the same issue but my audio was extremely low so it was very hard to hear
Excellent Sir. Thanks a lot.
Awesome, thanks!! Fist bump at the end haha
I'm looking online for Earth's average orbital radius and I keep on getting different values. How did you get 1.5 times 10 to the power of 8?
thanks alot for awesome lecturez.. great work..
Very nice video! Thanks a lot, helped me finish my homework :P
very good explanation, thank you!
Thank you. This was very helpful!