Originally posted by Lagrangian
I'm taking a free MOOC from U Maryland on Quantum Mechanics. This week we read bout the geometric adiabatic process; adhering to the time-dependent Hamiltonian: when an electrically charged particle is affected by a time-dependent electromagnetic field.
The particle orbits through energies in a geometric phase, like a sphere or torus, under slow perturbations - solving a time-dependent Schrodinger equation under the assumption of gradually changing conditions in the system at hand.
I'm presonally loving the quantum mechanics you're throwing out in here , but I think we should type it up a bit simpler to make it more accessible and interesting. I'm guessing most people skipped it having read the first sentence :p
This is indeed amazing! Not just the avoiding the mountain part, but the fact they all take the same migration route, despite it taking multiple generations to do one round trip! Crazy!
Lagrangian
I'm all up for that, sir. I do think that's a good idea.
Spacey Orange
Lagrangian
quote:
The new sensor made from graphene, is believed to be the first to be able to detect broad spectrum light, from the visible to mid-infrared, with high photoresponse or sensitivity. This means it is suitable for use in all types of cameras, including infrared cameras, traffic speed cameras, satellite imaging and more.
In the never-ending arms race between secret-keepers and code-breakers, the laws of quantum mechanics seemed to have the potential to give secret-keepers the upper hand. A technique called quantum cryptography can, in principle, allow you to encrypt a message in such a way that it would never be read by anyone whose eyes it isn’t for.
Enter cold, hard reality. In recent years, methods that were once thought to be fundamentally unbreakable have been shown to be anything but. Because of machine errors and other quirks, even quantum cryptography has its limits.
quote:
Renner is trying to work on cryptographic principles that would allow a high measure of security no matter the technological limitations. These could be simple things, like purposely sending multiple photons and checking to see if one gets stolen, thereby establishing that an adversary has hacked your line.
quote:
"Laws of Physics Say Quantum Cryptography Is Unhackable. It’s Not"
The US supreme court has ruled unanimously that natural human genes cannot be patented, a decision that scientists and civil rights campaigners said removed a major barrier to patient care and medical innovation.
The court on Thursday held that human DNA was a "product of nature", a basic tool of scientific and technological work, thereby placing it beyond the domain of patent protection. It struck down patents held by Myriad Genetics Inc, a Utah company, on two genes linked to a higher risk of breast and ovarian cancer.
But it also said that synthetic genetic material could be patented, in a mixed ruling for the biotechnology industry, which has argued that patents are necessary to recoup the billions of dollars it spends on research.
I have no problem with big business making a (big) profit, but disagree they should be able to patent naturally-occurring things like genes. a (rare) good decision by this SC.
Spacey Orange
Agreed. Private industry already has a host of other tools to protect their investments and encourage innovations, such as copyrights and trade secret laws.
, but I think we should type it up a bit simpler to make it more accessible and interesting. I'm guessing most people skipped it having read the first sentence :p
