Red Tash's Blog, page 63
March 16, 2013
Madame Zelda at That Book Place
March 15, 2013
Let Us Be Men
For God’s sake, let us be men not monkeys minding machines or sitting with our tails...
March 14, 2013
Scientists attempt to explain magic. Magic DRUGS, boys and...
Scientists attempt to explain magic. Magic DRUGS, boys and girls.
Acoustic Levitation
Using sound waves to levitate individual droplets of solutions containing pharmaceutical drugs and drying them in mid-air. Why do this? This is useful because most of the drugs on the market are either amorphous or crystalline and the crystalline form doesn’t get absorbed by the body. So levitating the solution allows the drug to be made into an amorphous state (by evaporation) because if it were to touch any surface it would simply crystallize. They call this “containerless processing”.
The frequencies used are just above the audible range at about 22 kilohertz and when the two speakers are aligned they create two sets of sound waves, perfectly interfering with each other creating a phenomenon known as a standing wave. This allows the objects to levitate in areas within the waves known as nodes as the acoustic pressure is enough to cancel the force of gravity.
Video Source - Argonne National Laboratory
March 13, 2013
luciens-library:
The test about women in media is called “the...
The test about women in media is called “the Bechdel Test”. Alison Bechdel, who created the idea, writes comic books (or graphic novels or whatever) herself, and here is my advice to you. Go and find her graphic novel Fun Home. It is mind-blowing and will change everything you thought you knew about comics. She does a bunch of other comics work too, but hot DAMN Fun Home is good. If you like James Joyce or literature or autobiographical writing, go and read it. If you like none of those things, go and read it anyway. It’s a seriously powerful piece of work.
