Yes, it is.
Sleepy Hollow is a fictitious town in the short story "The Legend of Sleepy Hollow" by American author Washington Irving, published in 1820.It is not a real place, and the story makes no mention of native tribes.
Hollow body guitars originated during the 19th and 20th century to produce the archtop guitars. The typical archtop guitar has a large, deep, hollow body whose form is much like that of a mandolin or violin family instrument.
There is nothing in the Great Sphinx as it is not hollow.
I think Jews.
Lines from a hollow-cathode lamp are generally narrower than those emitted by atoms in a flame due to the differences in the environments in which the atoms are excited. In a hollow-cathode lamp, the atoms are subjected to a controlled, low-pressure environment and experience minimal collisions, leading to reduced Doppler broadening and pressure broadening of the spectral lines. In contrast, flames provide a higher temperature and more chaotic environment, resulting in greater thermal motion of atoms and increased collisions, which broaden the emitted lines. This results in sharper, more precise emission lines from the hollow-cathode lamp compared to those from a flame.
A hollow-cathode lamp in analytical chemistry techniques functions by using a cathode made of a hollow tube filled with a specific metal. When a voltage is applied, the metal atoms in the tube are excited and emit light at specific wavelengths. This emitted light is then used for elemental analysis in techniques such as atomic absorption spectroscopy.
The typical hollow cathode lamp consists mainly of a cathode containing the element of interest, an anode, and an inert gas. After application of a potential difference between the cathode and the anode, the gas will accelerate toward the cathode removing its material; a process called sputtering. The element of interest is now in the excited state, and upon its return to the initial non-excited state, it would emit light waves of specific wavelength, that can be studied later.
A hollow cathode lamp works by passing an electric current through a gas-filled tube with a cathode at its center. The cathode emits light at specific wavelengths when the current is applied. In analytical chemistry, the lamp is used as a light source in instruments like atomic absorption spectrometers to analyze the concentration of elements in a sample based on the light absorption characteristics of the elements.
J.J Thomson's made a A cathode ray tube. This is a tube that is hollow and is sealed.
A hollow cathode lamp is used in analytical chemistry techniques to produce specific wavelengths of light for atomic absorption spectroscopy. This lamp helps to excite atoms in a sample, allowing for accurate measurement of their concentration in the sample.
Hollow cathode lamps are used in analytical chemistry techniques to produce specific wavelengths of light for atomic absorption spectroscopy. This light helps identify and quantify elements in a sample by measuring the absorption of light at characteristic wavelengths.
The performance of a hollow cathode lamp is crucial in improving the sensitivity and accuracy of atomic absorption spectroscopy measurements because it produces a stable and intense light source that enhances the detection of trace elements in the sample being analyzed.
Every manufacturer has their own special designs, but generally there are jacketed hollow points and unjacketted hollow points.
It depends. Generally, sizes up to 120mm are solid, and those from 140mm up are hollow.
In an electro-refining system the deposited metal is collected without the need to remove the cathode from the slurry bath. The cathode has a hollow cavity permitting steam or hot water to be introduced to heat the cathode. During the deposition process, the heating of the cathode encourages the deposition process. When the deposited material is to be collected, the cathode is heated to "melt" the bonds between the cathode and the deposited metal. Using a bracket which was installed before the deposition process and into which the deposited metal has been formed; the now-released sheet of deposited metal is easily removed.
During the sputtering process in a hollow cathode lamp, a gas, typically an inert gas like argon, is ionized within the hollow cathode by applying a high voltage. This ionization creates positively charged ions that collide with the cathode material, causing atoms to be ejected or "sputtered" from its surface. These ejected atoms then enter the gas phase and can be excited by the energy from the plasma, leading to the emission of light at characteristic wavelengths when they return to a lower energy state. This process is crucial for generating the specific spectral lines used in various analytical applications, such as atomic absorption spectroscopy.