In a new study published in the journal Scientific Reports, researchers manipulated the arrow of time using a very tiny quantum computer made of two quantum particles, known as qubits. The experiment was carefully controlled by scientists and could definitely be a breakthrough in modern science!
The researchers used a quantum computer to simulate a single particle, its wave function spreading out over time like a ripple in a pond. Then, they wrote an algorithm in the quantum computer that reversed the time evolution of every single component of the wave function, essentially pulling that ripple back into the particle that created it. They accomplished this feat without increasing entropy, or disorder elsewhere in the universe, seemingly defying the arrow of time.
To read more about how these scientists essentially made the impossible happen, head on here to livescience.com!
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Comments (2)
Yet I've been having trouble finding a book from the 1980s (that's about halfway back in time to the 1940s) whose title and author I've forgotten, where the time-travel device is built into a VHS videocassette that you rewind and fast-forward to control. One of the characters is a black man who gets in trouble with the police in the past because of driving a car in a white place (New Jersey) with an attractive white female passenger and, having lost a component of the cassette (I'm fuzzy on that part), everyone gets back to their proper time by somehow using the trylon and perisphere of the New York world fair, which in the story is a secret giant Tesla coil. There's a chase through the World of the Future diorama. The book begins with a jet airplane trip (with a VHS deck in the cockpit), and there's a Russian spy/gangster involved. Hmm.
The best time-travel sound is in /Time Cop/. It's a deep, satisfying BHLOOMP, like a marble dropping into a toilet but slowed down by about eight times. That's very close to what real time travel sounds like. Maybe they really traveled back in time and recorded it. But it was probably the marble thing.
Its impossible to be electrocuted by a computer, unless you're going for a Darwing Award :) ... in that case you deserved it.
First, the wirings are always insulated, and touching them is not a risk. I've done it.
Second, no personal computer I've heard of uses 380 VOLTS. It might have been 380 WATTS, which is quite different from 380V. Actually 380W is a quite common value for PSUs, specially for older computers.
The currents in the Power supply Unit (aka PSU) are rather high, but the voltages are low (12V max). A working PSU can give you a shocking experience (pun intended!), but not enough to kill. You either have low voltage and high current or high voltage and low current.
Touching the electronic circuits in the computer (like motherboard) will not kill you, and the motherboard will be damaged before you even feel the shock (I've been there!!). Voltages in the motherboard vary from -12V to +12V, so, if he was extremely unlucky, the most voltage he could get from the motherboard would be 24V.
In a 110V shock, studies show that you need at least 4 mA to even starting feeling the "tingling". A real shock starts at 300mA. An average size adult man needs at least 5A to die from a 110V shock. anything below that might not kill you, but might give you varying consequences, from brain and heart damage to severe burns.