Scientists
Puzzled with electricity and its properties in the mid to late 1700s. Completed experiments with Leyden Jars and a kite and a key.
Benjamin Franklin
A form of kinetic energy that involves the transfer of change through an electrical conductor.
Electrical Energy
A labeled drawing that explains or shows part of a circuit.
Circuit Diagram
the unit of resistance
ohm
standards and specifications that must be met, as in the engineering design process.
criteria
The highest point of a wave
crest
a material that does not allow light to pass through it.
opaque
also: translucent or transparent
Andre Ampere
A form of potential energy that produces a magnetic field.
Magnetic Energy
A continuous conducting path for current
circuit
An instrument used to measure electric current in a circuit.
ammeter
energy moving between two objects or systems
energy transfer
the quality of sound, as determined by its frequency; described as high and low.
pitch
to cast back from a surface (as with thermal energy, light, and waves)
reflection
This scientist did experiments with frogs and metals, although he was more interested in the metals than the animal. He was able to generate continuous electrical current with a voltaic pile.
Alessandro Volta
A form of kinetic energy associated with molecules in motion.
Thermal Energy
An element or device in an electric circuit.
An instrument that measures electrical potential, or voltage, across a component or components in a circuit.
voltmeter
glow with heat
incandesce
a wave that combines properties of longitudinal and transverse waves
surface waves
to change direction or bed from the original path, as with light waves
refraction
This scientist collected data, analyzed it, and used equations, as mathematical models to show how voltage, current, and electrical resistance are related in an electrical circuit. He received the Copley Medal from the Royal Society in 1841 for this work.
Georg Ohm
Energy associated with moving objects.
Kinetic Energy
The space or area in which magnetic forces can be observed.
the rate at which energy is supplied and used
power
Diodes that emit light when they are properly connected to an electrical current. Can produce different types and colors of light.
Light-emitting diode (LED)
a wave resulting from the vibration of matter, such as an ocean wave or a sound wave.
mechanical wave
wavelengths of invisible electromagnetic radiation that are slightly shorter than those of visible violet light
ultraviolet
A natural philosopher and observer, this scientist's ideas supported the Industrial Revolution. To honor his contribution to technical process, a unit of power is named for him.
James Watt
Stored energy that can be released; includes chemical, electrical, gravitational, and nuclear energy
Potential Energy
A system that uses coils of wire around a conductive metal core (usually iron) to convert electrical energy to magnetic energy, When electrical current passes through the coiled wire, the metal core is temporarily magnetized.
electromagnet
the unit of frequency
hertz
energy changing form within one object or system
energy transformation
a wave in which the disturbance of space of matter is in the same direction as the transfer of energy
longitudinal wave
wavelengths of invisible electromagnetic radiation that are slightly longer than those of red light
infrared
Michael Faraday
Energy cannot be created or destroyed. Energy can be transferred or transformed, but the total amount of energy remains the same.
Conservation of Energy
An object made up of various electrical components that allow for transporting electrical energy for a particular purpose.
Electrical System
unit of sound intensity
decibel
This light bulb contains a small amount of Mercury vapor, and the surface of the bulb is often coated with a specially formulated powder called a phosphor. When switched on, it emits an ultraviolet light.
fluorescent bulb
a wave in which the disturbance of space or matter moves in a direction that is perpendicular to the direction of the transfer of energy
transverse wave
the smallest energy packet that can exist. The _______of light are called photons. This is the singular form.
quantum