Shapes of Free Fall
Вставка
- Опубліковано 28 січ 2020
- What shapes can we observe in our Universe? What determines the shape of an orbit and what can make it change?
A lecture by Katherine Blundell, Gresham Professor of Astronomy
29 January 2020 1:00pm UK Time
www.gresham.ac.uk/lectures-an...
The shapes of the orbits of many planets and comets orbiting their mother-ship stars are well known to be circles or ellipses (an idea that was explained by Isaac Newton). But we now understand that, depending on the history and the energy of the orbiting system, other geometric shapes are possible and indeed frequently observed. This talk will explore how simple changes to the circumstances can make dramatic differences to the shapes of the orbits, all of which belong to a special family of shapes known as the conic sections.
Absolutely well done and definitely keep it up!!! 👍👍👍👍👍
wonderful lecture ; each and every words went to my mind so thank you Katherine Blundell.
I like this professor
That story about how the ancient Greek Philosophy was critical of recorded and rote learned opinions on nature or nurture, it should be self-consistent still that "it's always NOW" is so overwhelming of all Observation, that the typical displacement of responsibility authorities by false attribution is so prevalent.., or maybe not, "we're only human". At the Centre of Time Duration Timing Conception.
Ugh! Always Aristotle bashing among physicists.
Aristotle was not proven wrong - as he was not considering a situation where there is no atmosphere.
Aristotle's dynamics are strictly and explicitly terrestrial/sub-lunar and concerned with everyday experiential phenomena AS WE experience them. Tossing toys off of towers or tools and feathers in vacua - is to do something quite different to what Aristotle was engaged on. Aristotle is concerned with things that ARE subject to wind-resistance, weight, shape, angles of descent, height, distance and ectera.
When he does consider the hypothetical travel of particles (ἄτομοι) through a void, he is quite clear that they would travel at the same speed.
It was an (mis)interpretation of Aristotle that was refuted, not Aristotle himself.
Video is out of sync for me.
She's cute
Get a hiss-filter for your mic's ... ssssss
Pleas fire the video editor. Way out of sink and the fist 5 minutes were/are blank. Also, the audio is also 5 mins late. FAIL
📈🎯📉👀👍🍻
This video was live streamed and then trimmed using UA-cam's built in video trimming editor. We do all our lectures this way. Unfortunately there seems to have been an issue on UA-cam's end which has trimmed the audio but not the video. We will try to fix this now.
This has now been fixed
@@GreshamCollege 👍😎Merci Beaucoup