A vacumn-insulated sealable container with a heat reflective inner surface. To periodically tilt from side to side. A region of space in which electrical and magnetic forces exist and are described by a field. It has two components, magnetic, and electric. These can be at widely varying levels relative to each other.
Natural phenomena involving electomagnetic fields include light, radio waves, TV signals.
The image below represents the electromagnetic field lines emanating from a rotating planet or star. The capacity for doing work. A colorless, unusually stable transparent mineral formed when crystal quartz is melted at a white heat and cooled to form an amorphous glass. A navigation system made up of 18 to 24 satellites, each carrying atomic clocks, to provide a receiver anywhere on earth with extremely accurate measurements of its own three-dimensional position, velocity, and time. A theory describing the unification of gravity with the other elementary forces in physics, i.e., the weak force, the strong force and the electromagnetic force.