 Biogas / Bioethanol Car
 Convection currents
 Dewar Flask

Dynamo 2
inside a bike dynamo

Efficiency  Electric heater in Al
An electric heater used to heat a 1kg mass of Aluminium (SHC 900J/K/kg)
The meter readings were:
2.51 Amps, 8.49 Volts and the temperature was raised through 6 Kelvin in 450 secs
Efficiency = useful energy out / total energy in
Energy in = I x V x t
Energy out = m x shc x T 
Efficiency  Electric heater in water
A lamp was used to raise the temperature of 50ml (50ml has a mass of 0.05kg) of water (SHC 4200J/K/kg) by 30 Kelvin.
The meter readings were 1.68 Amps, 11.15 Volts and the time taken was 600 secs
Efficiency = useful energy out / total energy in
Energy in = I x V x t
Energy out = m x shc x T 
Efficiency  Electric motor
A geared electric motor used to lift a 1kg mass through a height of 1m.
The meter readings were:
0.23 Amps, 5.97 Volts and the mass was lifted 1m in 29.6 secs
Efficiency = useful energy out / total energy in
Energy in = I x V x t
Energy out = m x g x h
(g = 9.81 N/kg) 
Electrical Energy in
The equipment used to measure the energy required to lift a 1kg mass through 1m.

Energy diagrams
Basic Energy (Sankey) diagrams for standard and energy efficient light bulbs

Energy Efficiency Rating
Energy efficiency measured on a scale of A to G. Used for houses and electrical appliances

Energy Flow Diagram
An energy flow diagram for the European Union 2006

Environmental Impact Rating
Environmental impact. Measured on a scale of A to G. Used for homes

Fusion Reactor model
Model of a crosssection of a fusion reactor (JET) at the Culham laboratory, Oxford.
 Greenhouse Effect
 Hot air balloons
 Hydroelectric Dam
 Hydroelectric turbine
 Hydrogen Powered Car

Infra red
How to tell if the water is hot !
 IR image
 PhotoVoltaic Cells

Renewable Energy Flow Diagram
An energy flow diagram for Renewable Energy from the European Union 2006
 Solar furnace  France

Solar panels
PV photovoltaics

Thermistor
One student's experiment results for the effect of temperature on an ntc thermistor.
(ntc thermistor 1K 10% 3.5mm)  Wind Turbine