aether drift experiments

The exhibits consist of a booth, a Kraney graphic demonstration device, a water wave interference demonstration device, a Michelson Morley experimental device, a 32 inch LCD TV, a digital display screen, a graphic and text version, buttons, and a handwheel. The exhibit will present three experimental demonstration devices in two booths. Left booth - Chladni graphic demonstration device: When unmanned, the demonstration device is not powered on. When visitors press the "start" button, the Chladni board begins to tilt and recycle sand. After recycling, an appropriate amount of fine sand is released. visitors can also rotate the "frequency modulation" handwheel to observe the frequency of sound waves through a digital tube, observe the sound changes emitted by the speaker at different frequencies, and observe the regular patterns gradually formed by small particles on the surface of the Chladni board. When the frequency is different, the pattern will also change accordingly. Water wave interference demonstration device: When unmanned, the device is not powered, the top of the water storage device is sealed, and the water body is equipped with antifreeze, making it easy to display images of water wave interference. visitors press the "start" button on the booth to activate.

The unit is designed for unsupervised public use: controls are recessed or shielded, moving parts are enclosed, and the interface is operable by a child of about six with no instruction. Where a screen is used, the language can be switched without changing the hardware, and the content can be replaced on site.

In the 19th century, scientists gradually discovered that light is a type of wave, and most waves in daily life require a medium for propagation. Influenced by classical mechanics, they hypothesized that there is a substance called ether everywhere in the universe, which serves as a medium for the propagation of light. In 1887, Michelson and Morley designed the Michelson Morley interference experiment together, attempting to prove the existence of ether. But what disappointed them was that the experimental results did not prove the existence of ether, and based on this experimental result, Einstein's theory of special relativity was widely accepted.