Renewable & Clean Energy

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Wind Turbines

Keywords: kinetic energy, power, wind energy, wind turbines

Can wind turbines actually be used to harness a substantial amount of power?

The total energy available in wind and the power that can feasibly be extracted from it will be determined using the fundamentals of kinematics. Following, the limitations of location and machinery of wind turbines that restrict the amount of power that can be harnessed will be examined, before comparing the impact of wind energy with various other common sources of energy.

7 years 2 weeks ago

Hydro-Electric Dams

Keywords: dams, greenhouse gases, hydro-electricity, power

Why is this beautiful valley in north-eastern BC about to be flooded?

A look at the generation of power by a hydro-electric dam.

7 years 2 weeks ago


Keywords: biofuel, energy, solar radiation, transportation

Can plants be used to fuel my car?

A look at how much land is needed to plant corn so that the energy harvested is able to power a car for one year.

7 years 3 days ago

Solar Powered Airplanes

Keywords: airplanes, estimation, solar cells, solar energy

If we were to coat a Boeing 747 jumbo jet with solar panels, is it possible to fly it using only the energy generated by these solar panels?

This module introduces the concept of estimation, both in the sense of rounding extremely precise numbers off to remove excessive significant figures, and simplifying a complex process (the flight of a 747) to a simpler one, by evaluating the possibility of powering a 747 with solar panels.

7 years 3 days ago

Wave Power – A Simple Analysis

Keywords: power, waves

Will wave power save us?

A look at the amount of power potentially available in water waves.

7 years 2 days ago

Nuclear Energy Basics

Keywords: energy, health, ionizing radiation, nuclear, power, safety

What is the physical basis of nuclear power? Is nuclear power good or bad for the environment, safe or dangerous for us?

A look at the energy in the nucleus of a uranium atom, how this can be used to provide a reliable source of energy, and impact of this on the environment.

6 years 51 weeks ago

Hydro-Electric Dam Demo

Keywords: dams, hydro-electricity, power

Energy from Water?

An estimate of the power output from a model hydro-electric dam.

6 years 50 weeks ago

Solar Energy in a Temperate Climate.

Keywords: photovoltaic cell, solar cells, solar energy, solar radiation

Does it pay to cover your roof with solar panels in Vancouver?

We show the example calculation of expected amount of energy, which can be obtained in Vancouver from a roof covered with solar cells.

6 years 50 weeks ago

Clean Coal

Keywords: energy, Fossil fuel, greenhouse gases, power

An oxymoron?

Calculating how much coal we have to burn in a typical large power station to produce 1 GWe for a year.

6 years 50 weeks ago

Comparing Energy and Heat Units

Keywords: BTU, cost, energy, greenhouse gases, oil barrel, quad, R-value, thermal conductivity, thermal resistance, unit conversion, Watts

How do I compare heat and energy values given in different units?

A look at how to compare the costs of natural gas, gasoline and electricity and how to convert between various heat units including R-values, U-values, BTU/h, W and more.

6 years 46 weeks ago
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C21: Physics Teaching for the 21st Century
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