That article contains a lot of words, but can be summarised by this extract, "Physics can allow you to find the correct, physically relevant solution, whereas mathematics can only give you the set of possible outcomes."
EDIT: Ethan is probably paid by the word! 😉
I remember Dave Kimber (RIP) who was also a physicist and later a PhD EE taking someone to task on this website because they discounted the importance of intuition and creative problem solving over a purely math based approach. Einstein did the mental models and thought experiments first and then the equations to describe his ideas - he remarked that it was the ‘hardest thing he did in his life’.
I also think at the other extreme, math can be misappropriated to describe things that in reality you have no chance of proving. String theory and the multiverse spring to kind.
I also think at the other extreme, math can be misappropriated to describe things that in reality you have no chance of proving. String theory and the multiverse spring to kind.
The JWST has discovered mysterious "squircular" rings around a binary star system some 5,600 light-years distant.
The two stars circle each other in their own orbits, but come close to each other when they enter their periastron.
When the solar winds of both stars collide, debris and dust forms which becomes sculpted into a ring.
A new ring of dust is formed every time the stars enter their periastron, which happens at 8 year intervals.
Why the rings are "squircular" awaits an explanation!
The attached image was created by Judy Schmidt.
The two stars circle each other in their own orbits, but come close to each other when they enter their periastron.
When the solar winds of both stars collide, debris and dust forms which becomes sculpted into a ring.
A new ring of dust is formed every time the stars enter their periastron, which happens at 8 year intervals.
Why the rings are "squircular" awaits an explanation!
The attached image was created by Judy Schmidt.
Attachments
^
Karl Schwarzschild's solution of GR in 1915 predicted that time slows to a complete standstill as one approaches the event horizon.
For this reason early physicists studying these bizarre objects often called them “frozen stars".
Today, we know them by the name first used by physicist John Wheeler in 1967: black holes.
Here's a brief history of black holes: https://astronomy.com/magazine/2019/08/a-brief-history-of-black-holes
Karl Schwarzschild's solution of GR in 1915 predicted that time slows to a complete standstill as one approaches the event horizon.
For this reason early physicists studying these bizarre objects often called them “frozen stars".
Today, we know them by the name first used by physicist John Wheeler in 1967: black holes.
Here's a brief history of black holes: https://astronomy.com/magazine/2019/08/a-brief-history-of-black-holes
To be serious, I should like to know what vishal raju regards to be the fifth force of nature.
You may remember the launch of NASA's first planetary defence test mission, Dart (Double asteroid redirection test), which took place on 24 November, 2021.
The objective is to crash into asteroid Dimorphos at around 14,000 miles per hour to see how much the impact changes the orbit of this small asteroid around its larger companion, Didymos.
Well, it's almost time for the show, and Dart is due to impact Dimorphos on Monday 26 September.
https://www.msn.com/en-gb/news/tech...-first-image-of-target-space-rock/ar-AA11zRfp
The objective is to crash into asteroid Dimorphos at around 14,000 miles per hour to see how much the impact changes the orbit of this small asteroid around its larger companion, Didymos.
Well, it's almost time for the show, and Dart is due to impact Dimorphos on Monday 26 September.
https://www.msn.com/en-gb/news/tech...-first-image-of-target-space-rock/ar-AA11zRfp
Attachments
Scientists think humanity can deflect many dangerous asteroids if they are detected early enough - perhaps by a kinetic impactor more powerful than Dart.
What we are not being told is that Bruce Willis, at the ripe old age of 67, has refused to carry the responsibility for saving the world! 😀
What we are not being told is that Bruce Willis, at the ripe old age of 67, has refused to carry the responsibility for saving the world! 😀
If the asteroid that wiped out the dinos was a little more energetic, it has been suggested it would have reset life back to the Cambrian explosion 500 million yrs ago. Life on this planet, and especially large complex organisms, lives on a knife edge.
- Status
- Not open for further replies.