Silicon wafers; CC BY 4.0
File:CNX Chem 18 00 SilWafer.jpg
Created: 17 January 2015; https://openstax.org/books/chemistry/pages/1-introduction
Various silicon optics taken by Crystaltechno, CC BY-SA 3.0
File:7 Silicon optics Crystaltechno.jpg
Created: 20 April 2012
Phosphorus (P):
Phosphorus in its natural forms: white, red, rust, and violet
Glowing phosphorus in the flame test
Nanostructures of phosphorus-based materials photographed with electron microscopy
Phosphatidylcholine liposomes
Phosphorus is a component of our bones
Phosphorus comes in different colors, but here it is in its natural red form, the type that is used on red-tipped matchsticks as seen in the image on the right.
Phosphorus is found in matchsticks and helps them light
The match-striking surface on matchstick packs or boxes is a combination of red phosphorus, glue, ground glass, and this helps with the friction and production of "sparks" that light the match.
Fine bone china pieces such as these from the 1800's contain calcium-phosphate that has been finely ground. It is also referred to as "bone ash".
Phosphorus in smoke bombs; Phosphorus is highly reactive, highly volatile, and very unstable.
Phosphorus is used in flares because it is highly flammable, phosphorescent and pyrophoric, or self-igniting, when it encounters oxygen in the air.
Phosphorescent glow stick material
Phosphorescent glow-in-the dark material
Lithium-phosphate battery
Lithium phosphate ion battery
Anti-grease phosphate is found in dishwasher soap and dish washing liquid.
Apatite under UV light
Ammonium dihydrophosphate
Phosphophyllite
A phosphate mine in Utah is seen here
Street lights and parking garage lights are often made from sodium phosphate compounds (vapor)
Street lights and parking garage lights are often made from sodium phosphate compounds (vapor)