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We will follow this general procedure in this lab to measure the specific heat of an unknown substance and identify the substance by comparing the specific heat to a table of specific heats. A word of caution is appropriate here. We will use mercury-filled thermometers to measure temperatures.
Part I – Energy and its Uses. 2. Units and scales of energy use (PDF - 1.1MB) 3. Mechanical energy and transport (PDF) 4. Heat energy: Conversion between heat and mechanical energy (PDF ‑ 2.9MB) 5. Electromagnetic energy: Storage, conversion, transmission and radiation (PDF - 7.7MB)
The source of solar power is energy carried by the electromagnetic waves radiated by the Sun. Most of this energy is carried by visible light and infrared (heat) radiation.
þ Describe the sources and effects of heat. þ Explain thermal expansion of solids, liquids and gases. þ Explore the effects and applications of expansion and contraction of solids.
The Sun is the major source of light for the earth. The sun is a massive ball of fire, at the centre of which nuclear fusion produces massive energy. This energy comes out as heat and light.
a light source. Random (incoherent) light sources, such as stars and light bulbs, emit photons with random arrival times and a Bose-Einstein distribution. Laser (coherent) light sources, on the other hand, have a more uniform (but still random) distribution: Poisson.
In particular, the values of the fundamental constants presented in section 6 have been superseded by more recent recommended values from the CODATA Task Group on Fundamental Constants.
