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The road that led Wheeler to “It from Bit” started with a joke that he made to his student Jacob Bekenstein in the early 1970s. Alluding to the law of non-decreasing entropy (a measure of the lack of usable energy as bodies of disparate temperatures approach equilibrium), Wheeler used to jest that if he placed a hot cup of tea next to an iced cup and allowed them to even out their temperatures, he’d commit a crime by raising the amount of entropy in the universe.
Bekenstein brilliantly developed a solution that connected the surface area of a black hole’s event horizon (spherical region inside which light cannot escape, according to the classical picture) with a measure of black hole’s gravitational entropy. Any material falling into the black hole would deposit entropy via a corresponding expansion of the event horizon’s girth. Consequently, Wheeler’s dropping of cups into the universe would enlarge the black hole’s invisible frontier and thereby lead to a net gain in entropy after all.
Via the work of Claude Shannon, Bekenstein and Wheeler learned about another form of entropy, called information entropy, which quantified the content of strings of bits. That connection led them to an insight: if the black hole event horizon’s surface area is pixelated in squares each the dimensions of the Planck length (about 6 × 10^-34 inches, the lower limits of measurement according to quantum theory) squared, then its information content could be depicted as a single bit (0 or 1) in each square. Therefore, as the event horizon grew, its array of bits would increase as well, leading to greater and greater information entropy.
50 qubits can represent 10,000,000,000,000,000 numbers,
At any given moment about 2,000 thunderstorms roll over Earth, producing some 50 flashes of lightning every second. Each lightning burst creates electromagnetic waves that begin to circle around Earth captured between Earth's surface and a boundary about 60 miles up. Some of the waves - if they have just the right wavelength - combine, increasing in strength, to create a repeating atmospheric heartbeat known as Schumann resonance. This resonance provides a useful tool to analyze Earth's weather, its electric environment, and to even help determine what types of atoms and molecules exist in Earth's atmosphere.
Most “professionals” monitor the magnetic component of the peaks using large induction coils. This method has the advantage of being immune to the ambient weather conditions (the coils are often buried), easy to calibrate and suffering from lower levels of man made and natural interferance. Unfortunately, to have the required sensitivity at the frequencies of interest, the sensor coils must either be physically large in area, contain a huge number of turns or be wound on special very high permeability cores. Recall that the voltage induced on a coil by a time varying magnetic field is V = ωANB and the problem becomes apparent. Although this method is surely not beyond the means of ambitious experimenters (see, for example, www.vlf.it/inductor/inductor.htm) it is tedious and potentially expensive. For those having shallow pockets (me), or lacking the resolve to construct such a massive coil (me again), detecting the vertical E-field component of the Schumann resonances gives a workable, if somewhat less robust, option. The hardware is relatively simply and the antenna small, a 2 meter whip.
originally posted by: ErosA433
Which swings around in its orbit, the focus point of which is about 45AU away at its nearest point... all points at an object, of about 2-3 million solar mass, within less than 45AU, that is producing ZERO visible light.
im not a gambling man, but that kind of sounds like a black hole
originally posted by: ChaoticOrder
a reply to: neoholographic
"So if gravity is emergent, like temperature is, that means it must be emergent from something. But from what? This is where Verlinde borrows from the holographic principle. His theory suggests that gravity is emergent from fundamental bits of information that are stored in the fabric of spacetime itself."
In some sense this is already what General Relativity says. Gravity emerges from the properties of curved space-time, the detection of gravity waves makes that clear. Mass causes space-time to curve, and mass is made from particles, which can be described with bits of information according to quantum mechanics. It's also interesting to note that gravity affects the rate at which time flows, such that time flows slower near large objects, as if slowed down by reality to compensate for the intense computations performed in that region of space.
originally posted by: DaRAGE
So I have an idea about space, time, and gravity.
I kind of believe we are living in a simulated reality like on a computer. Therefore everything is information.
The more information there is to compute in a local area, the more time it takes. So just say empty space doesnt have much to compute in its area, a place where there is much to compute in a local area would take more time to process.
We have all heard of space time.
Space and time.
Time slows down the closer you get to a black hole. That i believe is because there is much more information to compute in that local area. The more mass you have the more time slows down aroind that mass due to more information to calculate and process.
The universe is made up of space time. Ever expanding. Which means more space and time is created constantly.
Imagine the universe as a huge lake filled with calm water constantly getting bigger creating space and within that space time as well.
The objects within that lake like planets and the sun and black holes contain mass... mass in information. The more mass the longer to compute that information within its locale.
Imagine mass as a sink hole within the lake of space time.
Sure... that mass takes up space... but it takes up more time within its allocated space to compute.
So time flows out of the space time around that mass and into the sink hole that requires more time to compute.
Could that flow of time into the sink hole of mass be what we experience as gravity?
Or is it the flow of space time... both space and time into the sink hole that we experience as gravity?
Thats why time slows down the closer you get to a black hole or an object with mass because time is flowing into it.
originally posted by: Kashai
a reply to: joelr
Why are you offering that because mass curves space-time it would constitute a "static" event?
You're suggesting that that in a condition that in an of itself could be defined as another state of order, cannot be defined as unmeasurable in relation to activity because we cannot measure it. Saying "I cannot measure something
so it does not move", as opposed to "I can not measure this because to measure its movement is beyond me". Is in all sincerity a big difference with all due respect.
originally posted by: Kashai
a reply to: joelr
"Kaluza's theory was a purely classical extension of general relativity to five dimensions."
Yes but this is what I have been talking about.