Explain TCP like I’m five https://t.co/CNF0vqwGix
— The Practical Dev (@ThePracticalDev) October 9, 2017
Published by Class Central, the Top 50 List
What I noticed is that the most popular programming language listed is Python with THREE entries including the NUMBER ONE course listed.
According to the authors a quick summary of the Top 50 list:
- Coursera is the top provider with 28 courses in the Top 50, and edX is second with 9 courses;
- Stanford and MIT top the list with four courses each, and the University of Cape Town has three courses in the Top 50 — two on FutureLearn and one on Coursera;
- the list includes courses from 35 universities and one research institute (Santa Fe), of which 22 universities are in the US; and
- Barbara Oakley and Terry Sejnowski, the instructors of the most popular online courses in the world, have two courses in the top 50. Their new course Mindshift joins Learning How To Learn in the top 50.
Ever try killing a fly, feel like you just aren’t fast enough, well, you aren’t…at least most of us aren’t
Actually, from the fly’s perspective, you quite literally are moving in slow motion, because every species experiences time differently. The reason? Differences in sight.
All animals, including humans, see the world in what’s essentially a seamless movie. What’s really happening, however, is that the brain is taking individual images sent from the eye at a fixed rate per second in distinct flashes and piecing them together.
The rate at which this occurs is called “flicker-fusion frequency,” which is measured by determining how rapidly a light needs to be switched on and off before it appears to an animal as a continuous stream. Scientists measure this in insects by hooking up tiny glass electrodes to the photoreceptors of its eyes and flashing light at increasingly fast speeds, all while a computer graphs the signals sent from the photoreceptors.
It turns out this rate is different for every animal. The general rule is: the smaller the species, the quicker the vision.
Humans see about 60 flashes per second while flies see about 250 – a full four times faster than humans.
In fact, the majority of flying animals, including vertebrates, have faster vision than humans – possibly because it’s mortally important that they’re to quickly react and dodge obstacles.