be considered as a special relativity of slow moving bodies. See classical mechanics for a more detailed discussion. Several experiments predating Einstein's 1905 paper are now interpreted as evidence for relativity. Of these it is known Einstein was aware of the Fizeau experiment before 1905, and historians have concluded that Einstein was at least aware of the Michelson–Morley experiment as early as 1899 despite claims he made in his later years that it played no role in his development of the theory. The Fizeau experiment (1851, repeated by Michelson and Morley in 1886) measured the speed of light in moving media, with results that are consistent with relativistic addition of colinear velocities. The famous Michelson–Morley experiment (1881, 1887) gave further support to the postulate that detecting an absolute reference velocity was not achievable. It should be stated here that, contrary to many alternative claims, it said little about the invariance of the speed of light with respect to the source and observer's velocity, as both source and observer were travelling together at the same velocity at all times. The Trouton–Noble experiment (1903) showed that the torque on a capacitor is independent of position and inertial reference frame. The Experiments of Rayleigh and Brace (1902, 1904) showed that length contraction does not lead to birefringence for a co-moving observer, in accordance with the relativity principle. Particle accelerators routinely accelerate and measure the properties of particles moving at near the speed of light, where their behavior is completely consistent with relativity theory and inconsistent with the earlier Newtonian mechanics. These machines would simply not work if they were not engineered according to relativistic principles. In addition, a considerable number of modern experiments have been conducted to test special relativity. Some examples: Tests of relativistic energy and momentum – testing the limiting speed of particles Ives–Stilwell experiment – testing relativistic Doppler effect and time dilation Experimental testing of time dilation – relativistic effects on a fast-moving particle's half-life Kennedy–Thorndike experiment – time dilation in accordance with Lorentz transformations Hughes–Drever experiment – testing isotropy of space and mass Modern searches for Lorentz violation – various modern tests Experiments to test emission theory demonstrated that the speed of light is independent of the speed of the emitter. Experiments to test the aether drag hypothesis – no "aether flow obstruction". Technical discussion of spacetime Geometry of spacetime Comparison between flat Euclidean space and Minkowski space Special