MIT engineers have created genetic circuits in bacterial cells that not only perform logic functions, but also remember the results, which are encoded in the cell's DNA and passed on for dozens of generations. The circuits, described in the Feb. 10 online edition of Nature Biotechnology, could...
New York University neuroscientist Joseph LeDoux, author of "The Emotional Brain", has come up with a new theory called "the survival circuit concept" that he outlines in Wednesday's issue of the journal Neuron. He suggests that instead of asking whether the feelings and emotions we humans...
Researchers have been taking inspiration from X-Men: they've developed a way to create printed circuits that can heal themselves using liquid metal. The best bit is that, unlike X-Men, this is real. More »
Machine logic is based on human logic. But although a computer processor can be dissembled and dissected in logical steps, the same is not true for the way our brains process information, says Mark Shein of Tel Aviv University's School of Electrical Engineering. Doctoral student Shein and his...
Three resistors have resistances of 100 Ohms, 330 Ohms, and 1000 Ohms. If these resistors are connected in parallel, what is their equivalent resistance?
a. 71 Ohms
b. 93 Ohms
c. 348 Ohms
d. 1430 Ohms
e. None of the above.
For a real resistor that has some internal resistance, which of the...
Three resistors have resistances of 100 Ohms, 330 Ohms, and 1000 Ohms. If these resistors are connected in parallel, what is their equivalent resistance?
a. 71 Ohms
b. 93 Ohms
c. 348 Ohms
d. 1430 Ohms
e. None of the above.
For a real resistor that has some internal resistance, which of the...
It makes me nervous too. I'm not so keen on the idea of circuits enveloped in a silk substrate, which melts into your body leaving just nanometers-thick layers of electronics. But it's for the best, trust me on this one.
Until now, body-embedded circuitry was very limited. The electronics were...
In the circuit above, R1 = 1870 Ohm, R2 = Rm = 8.9 Ohm and V = 6.6 volts.
A) Calculate the current I coming out of the battery without R2 in the circuit. Express your units as "mA".
C) Calculate the ratio of IB/IA
B) Calculate the current I coming out of the battery with R2 in the circuit...
My amp shut off then returned the other day. But now NADA! Even after cooling! What now? Can it be permanently shut off due to heat in it's enclosure? Can an electronics tech open it and restore the protection circuits? I would then add a fan to the sealed wall unit the amp resides in...
...correct value or number? In SMD based PCB several chip components are connected in the circuit, we don't have circuit details, we only have to checked by Multimeter or LCR meter , after confirm these components are faulty, we need correct number to replace the same components,Chip capacitor...