## IB Physics Glossary

Browse the glossary using this index

Special | A | B | C | D | E |

**F**| G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z | ALL

## F |
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## Far point is the most distant point from the eye for which the eye can focus on (assumed to be $$\infty$$). | |

## Faraday's law states, the induced emf is proportional to the rate of change of magnetic flux linkage: $$\epsilon \propto \frac{\Delta \Phi}{\Delta t}$$. | |

## First law of thermodynamics states, $$Q = \Delta U + W$$. Where Q is the heat supplied to system, $$\Delta U$$ is the change in the internal energy, W is the work done by gas, all in Joules. It is the law of conservation of energy. Note a. Q > 0, heat in; Q < 0, heat out b. $$\Delta U > 0, \Delta T > 0$$; $$\Delta U < 0, \Delta T < 0$$ c. W > 0, work done by gas; W < 0, work done on gas. | |

## Force fieldis a region of space where masses/charges feel a force. |

## Forced oscillations occur when an object is forced to oscillate by a periodic external force. (d) | |

## Fuel enrichmentEnrichment is the process by which the isotopic composition of a nuclear fuel is increased to make nuclear fissions more likely. Typically, uranium fuel rods are enriched, via neutron bombardment, to ensure that the percentage content of uranium-235 is increased. | |

## Fundamental units are the most basic units which cannot be expressed in terms of other units. The seven fundamental units are 1. meter (m); 2. second (s); 3. kilogram (kg); 4. Kelvin (K); 5. The Ampere (A); 6. mole (mol); 7. candela (cd). | |