There seemed a faint possibility here, if they could devise an envelope and a sufficiently compact source of heat.

Since the oxidation of aluminum is exothermic, these reactions can operate under mild temperatures and pressures, providing a stable and compact source of hydrogen.

Some lamps have the tube bent into a circle, used for table lamps or other places where a more compact light source is desired.

Engineers at the University of Missouri (MU), Columbia, have invented a compact source of x-rays and other forms of radiation.

Also it is difficult, using radioactivity, to create a small and compact source that offers the photon flux possible with a normal sealed X-ray tube.

The first compact fluorescent source was the Philips SL, which appeared in 1980.

"You're adding more flavor but adding a compact source of calories that's very efficiently metabolized, so it helps the effort of breathing."

They had the best and most compact source of valuata the UN military had been able to provide.

There were harder, more compact light sources, some a warm yellow and others deep and green.

A shadow of a solid object, using light from a compact source, shows small fringes near its edges.