TeV - Trillion electron volts (1012)
Thermal Gas - A collection of particles that
collide with each other and exchange energy frequently, giving a
distribution of particle energies that can be characterized by a
Thermal Particle - A particle that is part of a
Thermal Radiation - Electromagnetic radiation emitted
by electrons in a thermal gas.
Thermonuclear Fusion - The combination of atomic nuclei
at high temperatures to form more massive nuclei with the
simultaneous release of energy. Thermonuclear fusion is the
power source at the core of the Sun. Controlled thermonuclear
fusion reactors, when successfully implemented, could become an
attractive source of power on the Earth.
Toroidal Radius - In a solar loop structure, it is
the distance from the axis of the loop to the center of the
"semi-circle" that the loop forms. Half of the distance from one
loop footpoint to the other loop footpoint. For a doughnut, it
is the distance from the center of the doughnut hole to the
center (circular axis) of the pastry. See also Poloidal Radius.
Tangent - The ratio of the opposite side
and the adjacent side.
Temperature - Measure of hotness of object on a
quantitative scale. In gases, proportional to average kinetic
energy of molecules.
Terminal Velocity - Velocity of falling object
reached when force of air resistance equals weight.
Test Charge - Charge used, in principle, to
measure electric field.
Thermal Energy - Internal energy. Sum of kinetic
and potential energy of random motion of particles making up
Equilibrium - State between two or more bodies
where temperatures do not change.
Thermal Expansion - Increase of length or volume of
object due to change in temperature.
Thermometer - Device used to measure
Reaction - Nuclear Fusion.
Thin-Film Interference - Light interference caused by
reflection from both front and rear surface of thin layer of
liquid or solid.
Timbre - Sound quality or tone color;
spectrum of sound frequencies that produce a complete wave.
Time Interval - Difference in time between two
Tokamak - Type of fusion reactor.
Tone Color - Timbre or tone quality.
Torque - Product of force and the lever
Trajectory - The path followed by projectile.
Transformer - Device to transform energy from
one electrical circuit to another by means of mutual inductance
between two coils.
Transistor - Semiconductor device that
controls large current by means of small voltage changes.
Translucent - Material transmitting light
without but distorting its path.
Transmutation - Nuclear change from one element
Transparent - Material transmitting light
without distorting directions of waves.
Transverse Waves - Wave in which disturbance is
perpendicular to direction of travel of wave.
Traveling Wave - Moving, periodic disturbance in a
medium or field.
Trigonometry - Branch of math that deals with
the relationship among angles and sides of triangles.
Trough of Wave - Low point of wave motion, where displacement is most