Showing posts with label Science. Show all posts
Monday, 13 October 2014
Snake Farm Chaos!
Poultry farm and fish farms are very common, but ever heard about snake farming?
Yes it's true in China (Chongqing) a farm is located where 50,000+ snakes are kept and breed out of which 25,000 are Cobra snakes. The farm owners are 2 brothers who are running this farm for the past six years.
Snakes are bred here for commercial purpose here specially for their skin which is used in different medicines. 20 workers currently works on this farm, and when a snake bites any worker instead of going to hospital they uses their on made ointment and medicines on farm.
Workers need special training before joining farm as employee e.g: How to feed and look after snakes without causing damage to their selves as well as to snakes.
This farm is earning millions of dollar per year.
This farm is earning millions of dollar per year.
Wednesday, 24 September 2014
What's the Sound of a Single Atom?
 |
That may sound kinda like a silly philosophical question, but actually it's a scientific riddle that's now been solved.
If you're wondering why the title isn't a more like "Listen to the Sound a Single Atom Makes", it's because you won't be able to hear it. Actually, the scientists claim that this noise is the softest sound that is physically possible.
Researchers from Columbia University and Sweden's Chalmers University of Technology captured the sound that a single atom makes when it moves by detecting the vibrations emanating from it. Just like you have learned at school, vibrations create sound-it's just, in this case, the sound is very, very quiet indeed.
So how did they do it? Well, they excited an atom, then detected its acoustic emissions with a specially made chip that converts miniscule acoustic waves into microwaves. Crucially, those microwaves are of large enough amplitude to actually be recorded-using low-temperature microwaving amplifiers-unlike their acoustic counterparts. Göran Johansson explained to Motherboard:
"The sound amplitude, or strength, is very weak. Basically, when you excite the atom, it creates a sound, one phonon at a time, according to theory. It's the weakest possible sound possible at the frequency [that it vibrates]."
The results are published in Science. But why bother recording a sound so quiet? Well, because they can, for a start. But it's also a way to understanding the world of quantum sound, where quantized packets of sound-phonons-could be used in place of quantized packets of light-photons. Because sound moves more slowly than light, we might be able to more carefully probe and influence the quantum world if we can used sound.
[Image credit : Tech Times]
Subscribe to:
Posts
(
Atom
)
