seriously disabled

But what does it mean the dual of a dual vector space? And what does the [math]j_p[/math] mean here?

What does the double asterisk mean here and what does [math]j_p[/math] mean ?

[math]j_p : L^p(\mu) \overset{\kappa_q}{\to} L^q(\mu)^* \overset{\,\,(\kappa_p^{-1})^*}{\longrightarrow} L^p(\mu)^{**}[/math]

This is taken from here.

I just glanced at the book Representation Theory: A First Course by William

Fulton and in the book there is the symbol [math]\mathfrak{S}_{\lambda}[/math]. What does this symbol mean?

[math]\mathfrak{S}_{d}[/math] means symmetric group but what does [math]\mathfrak{S}_{\lambda}[/math] mean?

I think it means:

VDDH = voltage drain drain high

VDDL = voltage drain drain low

VSSH = voltage source source high

VSSL = voltage source source low

Some context would be useful, it could be just about anything.

This is in the context of liquid crystal display drivers.

What do these symbols mean in electronics?

[math]V_{DDH}[/math]

[math]V_{DDL}[/math]

[math]V_{SSH}[/math]

[math]V_{SSL}[/math]

If I understand correctly, liquid crystal displays use the Digital Video Interface (DVI). The DVI interface uses a digital protocol in which the desired illumination of pixels is transmitted as binary data.

My question is: When the digital signal enters the back of the liquid crystal monitor via the cable, what happens then? How does the binary signal tell the monitor which voltage to apply to the liquid crystals in order to produce the desired colors?

There are limits of fabrication processes near the 1-10 nm region, and there's the new and different behavior of circuitry when the wires are only a few atoms wide. People are no doubt working on these and other related issues right now.

But what is the new behavior? Also is this research field belonging to solid state physics?

Perhaps by the time we surpass the 1nm barrier, we won't be making "chips" based off silicon wafers.

But what methods are there for surpassing the 1 nm barrier? Will nanoelectronics cut it or is nanoelectronics only useful down to 1 nanometer?

What future technology will allow us to make computer chips smaller than 1 nm?

According to Wikipedia, a field emission display (FED) is a next-generation flat panel display technology that uses large-area field electron sources to provide electrons that strike colored phosphor to produce a color image.

An FED display replaces the single electron gun of a conventional CRT with a grid of individual nanoscopic electron guns. The emitters were originally built out of tiny molybdenum cones known as Spindt tips, but most recent FED research has focused on using carbon nanotubes instead. A high voltage-gradient field is created between the emitters and a fine metal mesh suspended just above them, which pulls electrons off the tips of the emitters. This is a highly non-linear emission process; small changes in voltage will cause the number of electrons being emitted to quickly saturate. The non-linearity of the process means that the grid of elements can be individually addressed without an active matrix – only the emitters located at the crossing points of the powered cathode and gate lines will have enough power to produce a visible spot

This line in bold I didn't understand. Could someone clarify me what it means? What are gate lines?

I was reading up on cryogenic systems in the Large Hadron Collider and they mention a 'white book', also called The Large Hadron Collider Accelerator Project, eds. Y. Baconnier, G. Brianti, Ph. Lebrun, A. Mathewson and R. Perin, CERN/AC/93-03 (LHC) Report (1993).

The problem is I looked everywhere on the net and couldn't find this report. Do you know where I can find it?

But what if it's a mix of equal parts blue photons, green photons, and yellow photons? Will it still look green? If so, would a prism separate those colours?

No because blue, green and yellow are the fundamental colors of light. They are called primary colors. Light with a wavelength of 570–580 nm is yellow, light with a wavelength of roughly 440–490 nm is blue and light with a wavelength of roughly 520–570 nanometres is green.

White light is the effect of combining the visible colors of light in equal proportions.

"Many waves" isn't a well-defined term. There is a minimum amount of energy you can have, and that can be green light. You can have many of these, which we call photons, and have brighter green light. If you look at the wave aspect, the wave will have a higher amplitude.

No what I meant is what if there are 3 or 4 electromagnetic waves of the color green entering the eye simultaneously?

If this is the case, what will we see then?

But that wasn't my question.

My question was whether the color green is many electromagnetic waves of a certain wavelength or only one electromagnetic wave of this wavelength?

Assuming you mean wavelength, it depends on the circumstances. Color is not only dependent on the wavelength, but how your eyes and brain interpret the signal they get. Green can be green because it's one wavelength, but it can also be green because it's multiple wavelengths, e.g. adding red yellow and blue light.

No. What I meant is whether the color green is only one electromagnetic wave or many electromagnetic waves together. If it's many waves, does the color get brighter?

When we see the color green (green is 490 nm - 560 nm on the electromagnetic spectrum), is it many electromagnetic waves or only one wave?

it'll be the same code no matter what the current character map is. but the computer takes this code, compares it to what it THINKS the keyboard looks like and then displays what it thinks it is sending.

That's what I was about to ask. How does the computer know how the keyboard looks like? It doesn't have eyes and vision so how exactly does it do that?

In Howstuffworks it's written that a keyboard is a lot like a miniature computer. It has its own processor and circuitry that carries information to and from that processor. A large part of this circuitry makes up the key matrix.

When the processor finds a circuit that is closed, by pressing the "a" key for example, it compares the location of that circuit on the key matrix to the character map in its read-only memory (ROM). Then, it sends the "a" key to the computer.

My question is: How does the character map inside the keyboard's processor work in detail? Could someone give us a detailed explanation on the character map inside the keyboard's processor?

Collinear holographies will be used in holographic versatile disks which will be able to hold up to 6TB (terabytes) of information, although the current maximum is 500GB.

http://en.wikipedia.org/wiki/Holographic_Versatile_Disc

We are discussing physics here and only physics. Do I make myself understood?

I apologize and yes next time I will not bring God or any other topic which isn't physics (or science) related up for discussion on this board, I promise!

What do you mean by "see the waves?" We do see the light. When light enters our eyes and hits our retinas, optic nerves are activated and carry signals to the visual cortex, which interprets it and puts together a coherent picture, etc. We have the ability to distinguish between some different wavelengths (by activating different types of nerves), which is what we call different colors. That's what color is. And, clearly, light that doesn't hit your retina isn't seen.

Still but we don't actually see the waves of visible light, we only see colors so the explanation that colors are really made of electromagnetic waves sounds fishy to me.

well, 1/ they're far to small

So if we got down to 380 to 750 nm which are the wavelengths of visible light, then could we see the waves?

3/ our eyes interpret the waves as colours(obviously).

But why do our eyes interpret the waves as colours?

i'm not sure i understand the question? do you mean why doesn't a beam of light seem to ripple like the surface of water?

No. What I meant is that we can only see the COLORS of visible light. But if these colors are really made of waves of different frequencies, why can't we see the waves themselves and not just the colors?