Part Time Accounting Assistant. Accounting Now has an exciting opportunity with a Manufacturing firm in the Northwest suburbs. Our client is looking to add a Part Time Accounting Assistant to their team and ready to start someone quickly! The chosen candidate will demonstrate entry leve.
Lanthanum is considered a rare earth metal because the process to mine it is difficult, time-consuming and expensive. Lanthanum is rarely the dominant lanthanide found in the rare earth minerals, and in their chemical formulae it is usually preceded by cerium. Rare examples of La-dominant minerals are monazite-(La) and lanthanite-(La).
Lanthanum is used in hydrogen sponge alloys, which take up to 400 times their own volume of hydrogen gas. Lanthanum is also used to make night vision goggles (infrared-absorbing glass).High quality camera and telescope lenses contain lanthanum oxide (La 2 O 3) making use of its high refractive index and low dispersion.anthanum is also used to make night vision goggles (infrared-absorbing glass). High quality camera and telescope lenses contain lanthanum oxide (La 2 O 3) making use of its high refractive index and low dispersion.