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2. Trace metal detection test - Wikipedia

   en.wikipedia.org/wiki/Trace_Metal_Detection_Test

   After several minutes, the skin is illuminated with shortwave ultraviolet (UV) light, revealing a pattern and type of metal based on trace amounts of metal transferred to the skin, which are invisible under normal lighting. [1] The technique was later adopted by police in the United States to help determine if a person had carried a firearm.

3. Metal detector - Wikipedia

   en.wikipedia.org/wiki/Metal_detector

   U.S. Army soldiers use a military standard metal detector. A metal detector is an instrument that detects the nearby presence of metal. Metal detectors are useful for finding metal objects on the surface, underground, and under water. A metal detector consists of a control box, an adjustable shaft [dubious – discuss], and a variable-shaped ...

4. Low-background steel - Wikipedia

   en.wikipedia.org/wiki/Low-background_steel

   Low-background steel, also known as pre-war steel [1] and pre-atomic steel, [2] is any steel produced prior to the detonation of the first nuclear bombs in the 1940s and 1950s. Typically sourced from ships (either as part of regular scrapping or shipwrecks ) and other steel artifacts of this era, it is often used for modern particle detectors ...

5. Explosives trace detector - Wikipedia

   en.wikipedia.org/wiki/Explosives_trace_detector

   The explosive trace detectors utilizing AFPs, known as Fido Explosives Detectors, were originally developed under the Defense Advanced Research Projects Agency (DARPA) Dog’s Nose program and is now produced by FLIR Systems. The current generation, provides broad-band trace explosive detection and weighs less than 3 lbs.

6. Eddy-current testing - Wikipedia

   en.wikipedia.org/wiki/Eddy-current_testing

   In this technique, permeability variations are suppressed by applying a magnetic field. The saturation probes contain conventional eddy current coils and magnets. This inspection is used on partially ferromagnetic materials such as nickel alloys, duplex alloys, and thin-ferromagnetic materials such as ferritic chromium molybdenum stainless steel.

7. 5 ways to build equity in your home more quickly (and why it ...

   www.aol.com/finance/how-to-build-home-equity...

   2. Put extra money toward your mortgage payments. Paying $50 to $100 more per month can make a real difference in building your equity and reducing the interest you pay over the life of your loan.