Graphite de used as a 2
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photoelectric effect, phenomenon in which electrically charged particles are released from or within a material when it absorbs electromagnetic radiation. The effect is often defined as the ejection of electrons from a metal plate when light falls on it.
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In pencils and lubricants, graphite is used. It is a strong heat and energy conductor. In electrical devices such as electrodes, batteries, and solar panels, its high conductivity makes it useful.
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