Google’s plan for quantum computer supremacy

Brace yourselves! As early as next year, Google may introduce a record-breaking quantum computer that can outperform supercomputers at certain tasks, New Scientist reports. Last month, Google's engineers quietly published a paper detailing their plans ;) Paper: http://arxiv.org/abs/1608.00263 So how will they do it? Quantum computers process data as quantum bits, or qubits. Unlike classical bits, these can store a mixture of both 0 and 1 at the same time, thanks to the principle of quantum superposition. It’s this potential that gives quantum computers the edge at certain problems, like factoring large numbers. But ordinary computers are also pretty good at such tasks. Showing quantum computers are better would require thousands of qubits, which is far beyond our current technical ability. Instead, Google wants to claim the prize with just 50 qubits. That’s still an ambitious goal – publicly, they have only announced a 9-qubit computer – but one within reach. Read the article: https://www.newscientist.com/article/mg23130894-000-revealed-googles-plan-for-quantum-computer-supremacy/ Photo: A quantum computer developed by D-Wave Systems #quantumcomputer #google #science #physics #research #engineering  Photo

Big step for quantum teleportation

If you're wondering how it's even possible to shoot a gun underwater, gunpowder contains oxygen — a key element in the firing process — the gun still goes off exactly as it would on land. Water is 800 times denser than air, so unlike a bullet fired above the surface, once the bullet hits the water it immediately begins slowing down. Reference: http://www.sciencechannel.com/tv-shows/outrageous-acts-of-science/videos/firing-a-gun-underwater/ Watch researcher fire weapon at himself - underwater- in terrifying physics experiment. https://www.youtube.com/watch?v=tzm_yyl13yo #science #underwaterbullets #physics 

Non-ohmic Devices

Ohmic devices are those devices that obey ohm's that states that the current passing through a metallic conductor is inversely proportional to the resistance of the wire provided all other physical properties are kept constant Therefore V = IR Non-Ohmic devices include: A diode A diode only allows current to flow in one direction through it (forward biased), when the current tries to flow the other way (reverse biased) no current is allowed to flow through the diode. LED – Light Emitting Diode An Led emits light when a current flows through it. These are being used more and more for lighting as they require a much smaller current than a filament bulb and that saves energy. Thermistor The resistance of a thermistor decreases as it’s temperature increases. Thermistors can be used as thermostats, the thermistor is used in circuits which monitor and control the temperature of rooms, freezers & fridges etc. LDR – Light Dependant Resistor The resistance of an LDR decreases as the light intensity falling on it increases. LDR’s are used in circuits which automatically switch on lights when it gets dark, for example street lighting. Cells in Series When cells are connected in series with each other and they are all connected in the same direction the total potential difference supplied to the circuit is the individual potential differences added together. Components in Series When resistors are in series with each other there total resistance is just there individual resistance added together. Current in series circuits. When you put an ammeter into a series circuit the current is the same wherever you put the ammeter. Potential difference in a series circuit. The total potential difference supplied by the cell is divided up between the components. If the components all have the same resistance they will have equal amounts of potential difference across them. If the resistance are not equal they may have different amounts of potential difference across them but when added up they must always equal the p.d. supplied by the cell. Components in Parallel Potential difference in parallel circuits. The potential difference supplied by the cell is the same potential difference as that across each component in the parallel circuit. Current in parallel circuits. The total current flowing from the cell must always equal the current flowing through each component when they are added together. If the components have different resistances then the current through each component may be different but it when you add them together they must add up to the total amount of current leaving the cell.

Time dialation

In the theory of relativity, time dilation is a difference of elapsed time between two events as measured by observers either moving relative to each other or differently situated from a gravitational mass or masses. An accurate clock at rest with respect to one observer may be measured to tick at a different rate when compared to a second observer's own equally accurate clocks. This effect arises neither from technical aspects of the clocks nor from the fact that signals need time to propagate, but from the nature of spacetime itself.

Einstein's theory of relativity

The theory of relativity was postulated by Albert Einstein in 1905 , it had two postulates
1: that the laws of physics are thesame in all inertial reference frames..I.e inertial frames are where newtons laws of motion(classical mechanics) are applicable
2: that the speed of light in vacuum is thesame for all observers . This means that the speed of light is invariant no matter the time, place where it is been checked .