When.com Web Search

Search results

1. Results From The WOW.Com Content Network

2. List of Mullard–Philips vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_Mullard–Philips...

   Most post-war European thermionic valve (vacuum tube) manufacturers have used the Mullard–Philips tube designation naming scheme. Special quality variants may have the letter "S" appended, or the device description letters may be swapped with the numerals (e.g. an E82CC is a special quality version of an ECC82)

3. List of vacuum tubes - Wikipedia

   en.wikipedia.org/wiki/List_of_vacuum_tubes

   Continuously transmitting tubes: Maximum anode dissipation in W or kW in Class-C amplifier telegraphy; Pulsed transmitting tubes: Maximum peak anode current in A (number preceded by "P") Rectifiers: Maximum average anode current in mA; Thyratrons: Maximum average anode current: Less than 3 digits: in mA; 3 or more digits: 1st digit: =0 – in mA

4. Graphite furnace atomic absorption - Wikipedia

   en.wikipedia.org/wiki/Graphite_furnace_atomic...

   GFAA spectrometry instruments have the following basic features: 1. a source of light (lamp) that emits resonance line radiation; 2. an atomization chamber (graphite tube) in which the sample is vaporized; 3. a monochromator for selecting only one of the characteristic wavelengths (visible or ultraviolet) of the element of interest; 4. a detector, generally a photomultiplier tube (light ...

5. Atomic absorption spectroscopy - Wikipedia

   en.wikipedia.org/wiki/Atomic_absorption_spectroscopy

   Atomic absorption spectrometer block diagram. In order to analyze a sample for its atomic constituents, it has to be atomized. The atomizers most commonly used nowadays are flames and electrothermal (graphite tube) atomizers. The atoms should then be irradiated by optical radiation, and the radiation source could be an element-specific line ...

6. Union Carbide - Wikipedia

   en.wikipedia.org/wiki/Union_Carbide

   The Union Carbide and Carbon Corporation was formed on November 1, 1917, from the merger of the Union Carbide Company founded in 1898, the National Carbon Company founded in 1886, Linde Air Products Company, a maker of liquid oxygen at Buffalo confiscated from Gesellschaft für Linde's Eismaschinen AG under the Trading with the Enemy Act of 1917, and the Prest-O-Lite company, manufacturer of ...

7. Graphite - Wikipedia

   en.wikipedia.org/wiki/Graphite

   The expanded graphite can be used to make graphite foil or used directly as a "hot top" compound to insulate molten metal in a ladle or red-hot steel ingots and decrease heat loss, or as firestops fitted around a fire door or in sheet metal collars surrounding plastic pipe (during a fire, the graphite expands and chars to resist fire ...