When I get the bill after a meal in the city
Ballin
Ballin
so many times.
lol true
Yep.
Refractive Indexes and Invisibility (A real-life magic trick)
When light refracts from two different substances with the same index of refraction, the materials cannot be distinguished from one another. Here, Pyrex and vegetable oil have the same index of refraction so that the test tube appears invisible in vegetable oil. The light isn’t bouncing off off of the pyrex tube, just travelling straight through.
However, water and pyrex have a very different refractive index. The light travelling through the water refracts off the pyrex and reflects back in to your eye, so it does not appear invisible.
When you see the pyrex test tube under the oil, you are actually just viewing the air inside it before it becomes filled as the pyrex itself is invisible.
Second chance Sunday!
More stuff about refraction from Cool Science GIFs for second chance Sunday
so cool.
Pasta Machine
Want.
Landlocked nations with a navy.
Interesting. . .
Peace Corps Life
The Satanic Verses by Salman Rushdie
ayo let's go
Estimate Number of Refugees Who Were Lost or Died Trying to Enter Europe Since January 2014.
Ekkora Magyarország a Naprendszer legnagyobb vihara (a Jupiter Nagy Vörös Foltja) mellett,
Hungary compared to Jupiter’s Great Red Spot.
Another True Size of Africa map.
#truth
Russia & Africa.