1. Using isotopes in measuring the diffusion of metals we got much more accurate data.
2. Being used in measuring the diffusion of metals isotopes gave much more accurate data.
3. Scientists have found a simple way to produce a laser beam of any colour and frequency desired.
4. Having used a laser beam scientists obtained accurate calculations of Jupiter's temperature - minus 150°F.
5. Being produced by the laser the narrow intense beam travels great distances without spreading.
6. When sent to the Moon in 1962 an intensive red beam illuminated a section of the Moon only two miles in diameter.
7. Having reached the surface of the Moon, it returned to the Earth three seconds later, its return being recorded by sensitive devices.
8. The beam traveled 800,000 km in space, its velocity approaching that light.