The school has been affiliated with some major inventions and innovations including: the Panama Canal locks; lockmaking;[46] the Brooklyn Bridge cables; cable-lift elevators;[47] cordless phones; ATMs; bar codes; laser; radar; penicillin; polymers; elevator brakes; lightweight, ultra durable automotive brake rotor;[48][49] light beer; cardiac defibrillator; artificial cardiac pacemaker; RFID; contact lenses; zoom lens; first telephone handset; commercial television;[50] non-stick coating as an application of Teflon; suspension system for the largest radio telescope; microwave technology; Apollo Lunar Module, the first, and to date only, manned spacecraft to operate exclusively in the airless vacuum of space; X-ray crystallography;[6] structure of the DNA molecule; submarine; modern refrigerator; A/C generator; electric motors; transformer;[46] submarine communications facilities;[51][52] development of the artificial sweetener aspartame; development of nontoxic processes to create food colorings and remove caffeine from coffee; the quasi-complementary (transistor) amplifier circuit; lateral transistor; the wireless microphone; as well as Eugene Kleiner’s first semiconductor (and much of the Silicon Valley), and Spencer Trask's investing and supporting of Thomas Edison's invention of the electric light bulb.[46][53][54][55][56]