What are the differences and similarities between the visible spectrum and visual perception?

small = small current large mag large current

c. magnitude and direction

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19