Instructional Video0:12
The March of Time

Rockefeller Center mail

12th - Higher Ed
MOT 1937: ROCKEFELLER CENTER MAIL: (POV behind) Mail clerk man delivering mail to Rockefeller Foundation executive offices African-American receptionist. CU Letters envelopes being sorted addressed to John D. Rockefeller. New York City NYC
Instructional Video0:17
The March of Time

1945: IWO JIMA: WS Battleship firing cannon guns. LS Battleship firing guns. US Marines in Higgins landing craft (LCVP) on ocean. HA WS Shells hitting water near moving landing craft. US Marines hurry out of landing vehicle. WWII.

12th - Higher Ed
MOT 1945: IWO JIMA: WS Battleship firing cannon guns. LS Battleship firing guns. US Marines in Higgins landing craft (LCVP) on ocean. HA WS Shells hitting water near moving landing craft. US Marines hurry out of landing vehicle. WWII.
Instructional Video0:17
The March of Time

1945: IWO JIMA: MS Tank moving. VS Flamethrower tank, tanks throwing flames hillside, arched, (POV INT Tank) Flames shooting onto ground.

12th - Higher Ed
MOT 1945: IWO JIMA: MS Tank moving. VS Flamethrower tank, tanks throwing flames hillside, arched, (POV INT Tank) Flames shooting onto ground.
Instructional Video18:02
msvgo

Molecular Orbital Theory

K - 12th
It describes linear combination of atomic orbitals, conditions for combination of atomic orbitals, types of molecular orbitals and energy level diagram.