Some limitations carbon dating
- The light can propagate in a vacuum and in transparent media like air, water and glass.Speed of light in vacuum (3x108 m / s or 300,000 km / s).Observing the reflection of a wave on a fixed obstacle; qualitative interpretation of the shape of the reflected wave. Wave: superposition of the incident wave and sine wave reflected from a fixed obstacle. Study of a uniform circular motion, velocity, acceleration vector, normal acceleration.
Superposition of two magnetic fields (vector addition) Conversion of electrical energy into mechanical energy. Observation of the effect associated with the reciprocal motion of a circuit in a magnetic field: conversion of mechanical energy into electrical energy.- A transmitter (light source, sound source, transmitting antenna) transmits a signal that propagates this signal can be received by a receiver (eye, ear, receiving antenna).The man is surrounded by a multitude of signals that carry information. Descartes' laws of refraction for radiation (one of the media being air). Change in the index of a transparent medium according to the radiation passing through it; qualitative interpretation of the scattering of light by a prism.Observation and location of images given by a convergent lens.Geometric modeling of a thin lens convergent optical center, fireplaces, focal distance, vergence.