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The earliest Chinese oil lamps are dated from the Warring States period (481–221 BC). The ancient Chinese created oil lamps with a refillable reservoir and a fibrous wick, giving the lamp a controlled flame. Lamps were constructed from jade, bronze, ceramic, wood, stone, and other materials. The largest oil lamp excavated so far is one ...
It is also known as pokerwork or wood burning. [1] The term means "writing with fire", from the Greek pyr (fire) and graphos (writing). [2] It can be practiced using specialized modern pyrography tools, or using a metal implement heated in a fire, or even sunlight concentrated with a magnifying lens. "Pyrography dates from the 17th century and ...
Rust converters are chemical solutions or primers that can be applied directly to an iron or iron alloy surface to convert iron oxides into a protective chemical barrier. These compounds interact with iron oxides, especially iron(III) oxide , converting them into an adherent black layer ( black oxide ) that is more resistant to moisture and ...
The two lamp fuels required different lamps. Burning fluid could be used in a simple small table and hand lamps, requiring no chimney. [22] Burning fluid lamps had two long tapering wick tubes that looked like the letter V. The tubes had caps resembling thimbles to extinguish the light and prevent evaporation when the lamp was not in use ...
A corrosion inhibitor or anti-corrosive is a chemical compound added to a liquid or gas to decrease the corrosion rate of a metal that comes into contact with the fluid. [1] The effectiveness of a corrosion inhibitor depends on fluid composition and dynamics.
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The compounds are usually wax-based and can be applied by aerosol can, brush, low pressure pump up spray, or compressor fed spray gun. An alternative for sills/rocker panels is to block drain holes and simply fill them up with wax and then drain most of it out (the excess can be stored and reused), leaving a complete coating inside.