In 1948, Spanish ophthalmologist Jose Ignacio Barraquer Moner was fed up with glasses. He wanted a solution for blurry vision that fixed the eye itself, without relying on external aids. The surgery he eventually devised was called “keratomileusis,” and his technique focused on reshaping the cornea— what we now know as LASIK. So how does […]
Check out this video by NASA scientist James O’Donoghue showing how fast… or horribly slow, the speed of light actually is.
Getting to space is incredibly hard, expensive and needs a lot of resources. A more efficient way to get there is a Skyhook (or Spacetether), an ever rotating cable with a counter weight, that catapults spaceships from earth orbit into the depths of space. [Kurzgesagt – In a Nutshell]
Studies suggest that if you made full-body scans part of your regular routine, you’d find a bunch of cancers over the years, but it wouldn’t change your odds of having a life-threatening cancer. This is mostly because our definition of cancer is a little too broad. [SciShow]
You probably think the appendix is a useless organ left over from our evolutionary past, but it turns out it may be doing something important after all. Watch this episode of Scishow to learn all about your appendix! [SciShow]
YouTuber My Microscopic World modified his microscope to harness polarized light, which illuminates tiny creatures in amazing ways. Larva that wear armor shimmer under polarized light as their segments change angle. In other creatures, you can see their internal organs: muscles, eggs, and even what they have recently eaten. Oh yeah, the footage was shot […]
Relative rotation rates and axial tilts of (the only) mapped planets and dwarf planets, at 10hours/sec [OC] byu/physicsJ indataisbeautiful An informative animation by data scientist James O’Donaghue showing the rotation speed and axial tilt of the planets of our solar system. I had no idea Jupitrer was spinning that fast considering its size! Wow! [Via […]
Octopuses are even more fluid than cats- the only rigid part of its body is the beak. How small a hole can an octopus squeeze through if he wanted to? Arnold is an octopus who lives at Octolab. Arnold’s favorite possession is his barrel, which gives him an incentive in this experiment. A transparent wall […]
Watch as the folks from Minuteearth rank dragons based on how biologically and evolutionarily plausible they are. [MinuteEarth]
A short video explaining why clouds stay up in the sky, even though they may be unimaginably heavy. Clouds are heavy. The water in a cloud can have a mass of several million tons. Every cubic metre (m3) of the cloud has only about 5 grams of water in it. Cloud droplets are also about […]