diamond turned aluminium mirror manufacture

Defence and Strategic Goods List 2019

Mar 27, 2019 · 8. Spherical aluminium powder (CAS 7429‑90‑5) with a particle size of 60 µm or less, manufactured from material with an aluminium content of 99% or more; 9. Titanium subhydride (TiH n) of stoichiometry equivalent to n= 0.65‑1.68; 10. Liquid high energy …

Chromium - Wikipedia

Chromium is a chemical element with the symbol Cr and atomic number 24. It is the first element in group 6.It is a steely-grey, lustrous, hard and brittle transition metal. Chromium is the main additive in stainless steel, to which it adds anti-corrosive properties.Chromium is also highly valued as a metal that is able to be highly polished while resisting tarnishing.

Engine List 3 - Atomic Rockets

The reaction mass (m r) is 3.9 times the vehicle mass (m v), while the antimatter fuel mass is negligible.Amazingly enough, this constant mass ratio is independent of the efficiency (η e) with which the antimatter energy is converted into kinetic energy of the exhaust.(If the antimatter engine has low efficiency, we will need more antimatter to heat the reaction mass to the best exhaust velocity.

Light-emitting diode - Wikipedia

A light-emitting diode (LED) is a semiconductor light source that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons.The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor.