Critical ionization velocity The critical ionization velocity is the relative velocity between an ionized plasma and a neutral gas, above which a runaway ionization process takes place.

And these are made of this kind of tube electricity tube, we call it in Holland.

This is a derivation of the Quantum Hall state of matter.

A dorsal neural tube.

The critical ionization process is a quite general mechanism for the conversion of the kinetic energy of a rapidly streaming gas into ionization and plasma thermal energy.

The degree of plasma ionization is determined by the electron temperature relative to the ionization energy (and more weakly by the density), in a relationship called the Saha equation.

Alpha particles, like helium nuclei, have a net spin of zero.

The alpha particle is trapped in a potential well by the nucleus.

Mercury was added to the tube, trapping a fixed quantity of air in the short, sealed end of the tube.

Much of the movement of the filaments is due to heating of the gas around the filament.

A secondary signaling center is then established in the roof plate, the dorsal most structure of the neural tube.

This is called a cycle valve tube.

His contributions to the series were honored in the name of the Jefferies tube , an equipment shaft depicted in various Star Trek series.

Alright, my favorite part.

He squeezed the toothpaste out of a tube.

Please buy a tube of toothpaste.

That's a fluorescent tube refined.

Valves control fluid flow and regulate pressure.

The earliest version of the CRT was invented by the German physicist Ferdinand Braun in 1897 and is also known as the Braun tube .

What in the design that made the difference is the boarding tubes the boarding tube gives to the bus the same performance as a subway.

The tube there's hollow, about paper thin.

It's victimless. It's meat from a test tube.

There's a big pipe with the blood flowing through it, and around that pipe are the nerves drawing their nutrient supply from the blood.

The length of the tube determines the fundamental frequency.

The other tube then released the fake blood.

Ebbing, D.D., Gammon, S. D. (2005).

Now, to do that, we need to be able to bring a camera and instruments in together through one small tube, like that tube you saw in the laparoscopy video.

Or, not so coincidentally, like a tube like this.

Each pipe is tuned to a keynote, called the fundamental frequency.

You can't put toothpaste back in the tube.

And we can then tubularize this scaffold.

John Fleming invented the first radio tube, the diode, in 1904.

When a key is depressed, the key action admits wind into a pipe.

So we went over into Michael's garage his dad had all kinds of stuff, and we put a pipe in the vice there, and screwed a cap on the end of the pipe, drilled a hole in the back of the pipe, took some of our firecrackers, pulled out the fuses, tied them together, put them in the back there, and down in that hole and then stuffed some of our gunpowder down that pipe and put three ball bearings on the top, in the garage.

In 2006, medical exposure constituted nearly half of the total radiation exposure of the U.S. population from all sources.

Here, she's trying to get a piece of meat out of a tube.

The little hole in the middle, we'll come to a bit later, but that's for the pollen tube to come out later on. A very tiny tube.

Very high temperatures are usually needed to sustain ionization, which is a defining feature of a plasma.

Electric arc With ample current density and ionization, this forms a luminous electric arc (a continuous electric discharge similar to lightning) between the electrodes.

The stellar temperature will determine the rate of ionization of various elements, resulting in characteristic absorption lines in the spectrum.

It'll approximate that shape. We do this for real in the test tube.

Speed is a desirable feature of a torpedo loading system, but safety is paramount.

If you look at this, just the tube, it is quite bright.

The first stage in vertebrates is called neurulation, where the neural plate folds forming the neural tube (see above).

It is widely used in commercial ionization chamber smoke detectors, as well as in neutron sources and industrial gauges.