Mechanical
Engineering 150
Understanding Technology: How
Things Work
1
Magnet
A body having the property of attracting iron
and producing a magnetic field external to
itself; specifically : a mass of iron, steel, or
alloy that has this property artificia
Mechanical
Engineering 150
Understanding Technology: How
Things Work
1
Photography
History
How a film cameras work
How film is developed
How digital cameras work
2
History
Photography comes from the
Greek words photos meaning
light and graphein meani
Mechanical
Engineering 150
Understanding Technology: How
Things Work
1
Sensors and Detectors
A device that responds to a physical stimulus
and transmits a resulting impulse.
Merriam-Webster
Stimulus can be many things, including:
Light
Heat
Sound
F
Mechanical
Engineering 150
Understanding Technology: How
Things Work
1
Sound
Definition
Parameters
Amplitude
Frequency
Speed
Doppler effect
2
Sound
mechanical vibrations transmitted through
an elastic medium: gasses (air), liquids
(water), and solids (st
Mechanical
Engineering 150
Understanding Technology: How
Things Work
1
Light
What is light
Speed of light
Refraction of light
Lenses
Light sources
Light units
Light pressure
2
What is light
Electromagnetic radiation wavelengths in the range of 400
