Notes Physics HEALTH
TYPES OF THERMOMETER
1. THE LAB THERMOMETER
2. THE CLINICAL THERMOMETER BOTH LIQUID IN GLASS
3. THE DIGITAL THERMOMETER
LAB AND CLINICAL THERMOMETERS
MAGNIFIER IN CLINICAL THE
Notes Physics Output Devices
Loudspeaker-electrical to sound
L.E.D.-electrical to light
Bulb-electrical to light
Buzzer electrical to sound
Relay-electrical to movement
L.E.D. has to be protected by adding in a series resistor to take
Notes Physics Where Does Electricity come From
Be safe around electricity
Electricity can be very dangerous. You should never put anything into electric
sockets, except plugs.
Never touch appliances, wires or electrical switches with wet hands or feet.
Notes Physics ELECTRICITY EQUATIONS
P = I2R
RT = R 1 + R2
1 /RT = 1/R1 + 1/R2
RULES FOR SERIES AND PARALLEL CIRCUITS
VOLTAGE SPLITS UP IN A SERIES CIRCUIT
CURRENT STAYS THE SAME IN A SERIES CIRCUIT
Notes Physics ENERGY IN THE HOME
By the end of this unit you should:1. Know that energy is required for heating, lighting and operating appliances.
2. Know that energy can be supplied from electricity, gas oil, or solid fuel.
3. Know that the cost of home
Notes Physics ELECTRICITY
Value of mains supply = 230V
Fuse is used as a safety device
Prevents too much current flowing in circuit.
Power of appliances measured in watts (W)
Plug wires colors
Notes Physics Color by Transmission
Color by Transmission
The color of a transparent object depends on the color of the light that is
A piece of blue glass transmits blue light.
Pigment is the material in the transparent glass that selectivel
Notes Physics Color
: The Color Spectrum
Isaac Newton was the first to make a systematic study of color.
He did this by passing a narrow beam of sunlight through a triangular-shaped
His method showed that sunlight is composed of a mixture of
Notes Physics Mixing Colored Pigments
Mixing Colored Pigments
Mixing red, green, and blue paint is entirely different from the mixing of colored light.
-Pigments absorb light of a relatively wide range of frequencies.
-Subtractive primary colors are three
Notes Physics ENERGY
Energy is the ability to do work.
Which of these is not a form of energy?
The Earth is a magnet.
The Law of Conservation of Energy
Energy cannot be created or destroyed
E= m x C2
Matter can be co