› added 4 years ago

113

TIL that about 40 of the 200 squirrels in Charlie and the chocolate factory are real, trained squirrels.

Read more youtu.be

via reddit.com

jN6KR You probably know that your visual perception of the world is a bit different than your pets’. Dogs see things with less color than humans, snakes can see infrared, and if you have a pet bull, it lives in a world where red and green are the same color. This brings up a good question. Why do you have a pet bull? You should get a cat instead, and when you do, it is important to know that your new friend can’t focus on objects farther than 20 feet away. The point is, animals have evolved to see in a variety of ways. But how can we see things through their eyes? Marine biologist and National Geographic Emerging Explorer David Gruber collaborated with a research team to develop lights and camera filters that allowed him to do just that, underwater. Through their work, the team discovered biofluorescence in an abundance of aquatic species. This “glowing” trait has to do with how an organism absorbs and emits light. Research has indicated that this radiance is possibly used for communication and camouflage. One caveat: You need a certain species of eyes (or David’s camera) to see it. Swell sharks (Cephaloscyllium ventriosum) have fluorescent proteins inside their skin, which are triggered by the ocean’s blue light, becoming visible to other swell sharks. David’s camera has special yellow filters that allow the simulation of a swell shark’s vision. It turns out there is a massive rave going on 500 meters below the ocean’s surface, and one of the glowing guests is a type of cat shark!
AP1w TIL James Garfield could write Latin with one hand and Greek with the other, at the same time.
V4dQ TIL a 2001 study found up to 70% of female high school students in Tokyo had been groped while riding the train
6EJL8 TIL the reason that some semi-truck trailer doors have quilted patterns on their rear doors is to reduce glare on the vehicles following them.
e0G9D TIL that the term “cervical” does not only refer to the cervix of a woman, but is also used to allude to a person’s neck and several other “neck-like passages” within the body (see comment).