platinum wire वाक्य
उदाहरण वाक्य
मोबाइल
- The presence of methanol vapor causes the glow plug found in model engines to heat via a catalytic reaction with the platinum wire and glow.
- For some reactions, two platinum wires ( chosen for their non-reactivity ) are placed in the sealed end so an electric spark can be created between them.
- Catalytic lighters use methanol or methylated spirits as fuel and a thin platinum wire which heats up in the presence of flammable vapours and produces a flame.
- In 1841, Frederick de Moleyns of England was granted the first patent for an incandescent lamp, with a design using platinum wires contained within a vacuum bulb.
- The barretter used a fine platinum wire, called Wollaston wire, manufactured as a platinum core in a silver sheath that had to be stripped off with acid.
- Minco's combination etched foil heater-platinum wire sensors were used on many NASA projects including the 1976 Viking Lander ( heated soil samples ) and Skylab ( Inertial Guidance System ).
- A drop of pure mercury is dropped into the lower end of the glass tube so as to connect with the platinum wire at the level of "'B " '.
- A platinum wire is put into connection with the mercury in each tube, and, finally, arrangements are made by which the capillary point can be seen with a microscope magnifying 250 diameters.
- Nichrome wire can be used as an alternative to platinum wire for flame testing by colouring the non-luminous part of a flame to detect cations such as sodium, potassium, copper, calcium etc.
- A platinum wire or film is supported on a former in such a way that it gets minimal differential expansion or other strains from its former, yet is reasonably resistant to vibration.
- This device was made from a cleverly produced matrix of magnesium oxide which did not need to be supported by a platinum wire cage, and was exhibited in the Crystal Palace exhibition of 1883.
- Pure iridium is very difficult to pull into small diameter wires; at the same time, platinum has a low Young's modulus which makes pure platinum wires bend easily during the insertion in nervous tissue.
- The silver cladding is etched off a short piece of the composite wire, leaving an extremely fine platinum wire; this is supported, on two heavier silver wires, in a loop inside a glass bulb.
- The sample is put into direct contact with a platinum wire, or placed in a quartz sample tube, and rapidly heated to 600 1000 �C . Depending on the application even higher temperatures are used.
- The latter included sets of ingeniously designed bottles for taking samples of air; their sealed necks were broken open by an electromagnetic actuator and re-sealed by heating the neck with an electric current running through an exposed platinum wire.
- The design had two drawbacks & mdash; a rather large temperature coefficient of " 1.15 mV / �C, and corrosion problems caused by the platinum wires alloying with the zinc amalgam connections where they enter the glass envelope.
- The action of this detector is based upon the fact that only the tip of a platinum wire a few thousandths of an inch in diameter is immersed in an electrolyte solution, and a small current can flow better in the direction across the point that makes the point more negative.
- Above "'F "'several holes are cut in the rubber tube at the level of "'G "', and from this point a fine platinized platinum wire extends through the lumen of the tube and is held in place by fusion to a bump on the inside of a short piece of glass tube at the level of "'I " '.
- The heat emitted by isinglass, for example, is different from that emitted by lampblack, and the heat emitted by cloth, or paper, differs from both . " Looking at an electrically-heated platinum wire, it is obvious to the human eye that the heat's spectral profile depends on whether the wire is heated to dull red, bright orange, or white hot.
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