You can create your own holography table using inner tubes and sand to dampen vibration. HowStuffWorks Getting a good image requires a suitable work space. In some ways, the requirements for this space are more stringent than the requirements for your equipment. The darker the room is, the...
A test method is said to be accurate when the test value approaches the absolute "true" value of the substance (analyte) being measured. Results from every test performed are compared to known "control specimens" that have undergone multiple evaluations compared to the "gold" standard for that ...
In reality, these tubes are coiled in the shape of a snail shell, but it's easier to understand what's going on if you imagine them stretched out. It's also clearer if we treat two of the tubes, the scala vestibuli and the scala media, as one chamber. The membrane between these ...
“After they replaced all of the missing brass water tubes, a week later the plant manager told me it was a ‘miracle’—electrode-cap life was good on all of the guns. He estimated that they had been running with missing tubes for 5 months, while the welding engine...
When the Seebeck coefficients of both metals are known, and the generated voltage is measured, we can calculate the temperature difference between the hot and the cold side. To do this calculation, the generated millivoltage must be measured very accurately. This can be a challenge to measure....
In reality, these tubes are coiled in the shape of a snail shell, but it's easier to understand what's going on if you imagine them stretched out. It's also clearer if we treat two of the tubes, the scala vestibuli and the scala media, as one chamber. The membrane between these ...
The edge of the knife is then measured and scribed. This is to help make sure the same amount is ground on both sides of the knife. Usually I like to leave 0.020″-0.030″ at the edge for the secondary bevel. Flipping the blade over insures that the lines are centered on the blade...
Total superheat (measured at the condenser) should be 8-20°F. If the total superheat is below 8°F check the TXV sensing bulb for proper installation, good contact and insulation. If the total superheat is above 20°F check the evaporator superheat. Evaporator superheat should be between 8...
Pipe and tubing are not measured the same way. Tubing is measured and named based on the actual outside diameter of the tube. PEX, or Cross-Linked Polyethylene Tubing, is another technology fast becoming popular, and it is measured and named by inside diameter. Example: Pipe vs. Tubing Out...
and pick up some kind of signal by default. Add a proper directional antenna and you'llgaina much better signal. Gain is measured in decibels (dB), and (as a broad rule of thumb) the bigger the gain the better your reception. In the case of TVs, you get much more gain from a com...