cool physics

Catching prey using Vortices

I was reading about Vortices and after hours of research online, out of the blue I stumbled upon this amazing bird. This is the Red Necked Phalarope and from the looks of it seems to have put vortices to a really productive use - catching its prey.

By rotating around ~60-80 times a minute, it produces an upward vortex that sucks out insects/bugs/crustaceans from the water, which it swiftly picks up with its beak and eats. ( This one would have aced the Fluids class for sure :D)

This is analogous to tornadoes sweeping up cars and houses along its way in an upward swirl.

Mind Blown!

** The actual dynamics of vortices of course is waay more complicated. ;)

*** There are three species of phalarope (red-necked, red/grey, and Wilson’s), and they can all feed like that.            

Space fact #5

If you and I are in separate space ships both traveling fast, there’s literally no possible way to determine if I am staying still and you are moving, or if you are staying still and I am moving, or if we are both moving. Also, from your perspective time will flow normally for you and slower for me, but from my perspective time will flow normally for me and slow for you.

Basically, everything, including time, is completely relative.

“QUANTUM BREAKTHROUGH COULD PAVE THE WAY FOR FUTURE ENCRYPTED INTERNET”

 Scientists at the University of Science and Technology in Hefei, China have successfully beamed ‘entangled’ particles of light from a satellite with a specialized quantum optical payload to ground stations, paving the way for a future global quantum internet.
 The experiment relied on the world’s first quantum-enabled spacecraft - a Chinese satellite called Micius. As it travelled over China, the satellite created pairs of photons with properties that were linked through quantum entanglement. It then beamed these simultaneously to three ground stations - travelling up to 2,000 km (1,240 miles) before reaching their destination.
Researchers believe that by linking particles in this way, encrypted information could be sent all around the world across a quantum network with no danger of anybody decrypting and reading the content, as can be done currently on the existing internet.
 “It’s an important step towards a worldwide quantum network,“ said Anton Zeilinger at the Vienna Centre for Quantum Science. "If you envisage a quantum network, the question is how to cover large distances and that cannot be done with glass fibres on the ground. You have to go into space, because in glass fibres you lose the signal. It’s very important to show that it works with satellites, so I’m very excited by this.”

Read more about this fascinating story at: https://www.theguardian.com/science/2017/jun/15/scientists-make-quantum-leap-towards-a-secure-new-kind-of-internet

Image: Timelapse of laser-guided satellite-to-earth link of Micius to an observatory at Ali

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there’s a good reason these tables are numbered honey, you just haven’t thought of it yet // panic! at the disco

The Subtle Pythagoras Theorem

Pythagoras famously quoted:

Do not say a little in many words but a great deal in a few

And his theorem is a draconian illustration of these words.

* This happens to be one of my favorite proofs of the theorem, but feel free to explore the legion others that are in existence, like this one :

Good Day!

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Minimal Math Concepts +

These are the work of Marlon Tenório, who runs a blog called minimalmathconcepts. What he does is take concepts and illustrate them in a exquisite fashion. Check him out! His work is remarkable.

And if you really like his work, you can also buy his goodies on-line here.

Kudos MMC+ on such a good work and all the very best to you mate :)


** When FYP surfaced on Tumblr, we were just another blog. And big giants like space-exploration and mind-blowing-science, were so generous to uplift us. And we are just following the Tumblr tradition :) Cheers!