Showing all 3 results
Casting the mold of a coin (Thaler) with a mixture of gypsum and water (CaSO4 + H2O)
Oxyhydrogen is mixture of hydrogen (H2) and oxygen (O2). If a stream of air is blown through a Oxyhydrogen flame, the fuel- air mixing is enhanced and the jet exiting the flame is intensely hot.
Horticulture illustration: a farmer sprays Bordeaux mixture on fruit trees in orchard. Bordeaux mixture is a mixture of copper sulfate (CuSO4) and slaked lime (Ca(OH)2) used in vineyards, fruit-farms and gardens to prevent infestations.