Amorphous: A glass, not having a
Compressor: A machine used to
increase the pressure of (compress) a gas.
Crystalline: Having each
element's atoms bonded in a regular, repeating structure in space.
Hydrogen: The first element on
the periodic table. Hydrogen is a flammable gas that is lighter than
air and exists in its natural state as H2.
Isotopes: Atoms of the same element with different numbers of neutrons in their nuclei.
Mechanical alloying: A method of alloying by ball milling (grinding and pulverizing) powder materials
Nanostructured: Having a size on
the order of nanometers (10-9 meters).
Nickel-cadmium cell: A storage
battery having a positive electrode of nickel and a negative electrode
of cadmium, widely used in cordless appliances. Without recharging,
it can serve as a primary battery.