What waves are used in the hospitals to take pictures of bones

An X-ray is used to take pictures of your bones. The waves that are used are known as radiation waves.

continuous conducting path for current, power supply

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