A sealed radioactive source is radioactive material that is permanently sealed in a capsule or bonded and in a solid form. Sealed radioactive sources are either installed in devices that allow the ...

From punch card-operated looms in the 1800s to modern cellphones, if an object has an "on" and an "off" state, it can be used ...

The atoms are fixed in place but are free to vibrate. When part of a solid absorbs heat energy the atoms vibrate faster and with bigger amplitude. These vibrations pass from atom to atom ...

Researchers have explored a 'quantum-inspired' technique to make the 'ones' and 'zeroes' for classical computer memory applications out of crystal defects, each the size of an individual atom. This ...

At the end of the 19th century, while studying the effects of passing an electrical current through gases at low pressure, German physicist Wilhelm Röntgen accidentally discovered X-rays—highly ...

But delivering radiation from outside the body also risks damaging to healthy organs. Another problem is that this approach is generally limited to solid tumors because cancer cells affecting ...