Lanthanum
61Gas tungsten arc welding — TIG welding of a bronze sculpture Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG …
62Phosphate binders — are a group of medications used to reduce the absorption of phosphate and taken with meals and snacks. They are typically used in patients with chronic renal failure (CRF) as they cannot get rid of the phosphate that gets into their blood (i.e.… …
63Hot cathode — is also a name for a hot filament ionization gauge, a vacuum measuring device.In vacuum tubes, a hot cathode is a cathode electrode which emits electrons due to thermionic emission. ( Cf. cold cathodes, where field emission is used and which do… …
64Glossary of fuel cell terms — The Glossary of fuel cell terms lists the definitions of many terms used within the fuel cell industry. The terms in this glossary may be used by fuel cell industry associations, in education material and fuel cell codes and standards to name but …
65lanthane — [ lɑ̃tan ] n. m. • 1845; lat. sc. lanthanum (1839); du gr. lanthanein « être caché » ♦ Chim. Élément atomique (La; no at. 57; m. at. 138,90), premier métal de la série des lanthanides. Le lanthane et le cérium sont présents dans la monazite. ●… …
66lanthanide series — noun the rare earth elements with atomic numbers 57 through 71; having properties similar to lanthanum • Hypernyms: ↑series * * * noun : the group of rare earth metals often including lanthanum and sometimes yttrium compare periodic table * * *… …
67Chemical element — The periodic table of the chemical elements A chemical element is a pure chemical substance consisting of one type of atom distinguished by its atomic number, which is the number of protons in its nucleus.[1] Familiar examples of …
68Timeline of chemical elements discoveries — The discovery of the elements known to exist today is presented here in chronological order. The elements are listed generally in the order in which each was first defined as the pure element,[clarification needed] as the exact date of discovery… …
69Manhattan Project — This article is about the atomic bomb project. For other uses, see Manhattan Project (disambiguation). Manhattan District The Manhattan Project created the first nuclear bombs. The Trinity test …
70Niobium — zirconium ← niobium → molybdenum V ↑ Nb ↓ Ta …
