Uncertainty Principle - Fish and Bear Paw Cannot Have It Both

The exhibit mainly consists of two parts: the Heisenberg uncertainty principle experimental interactive device and the seesaw interactive device. Heisenberg uncertainty principle experimental setup: mainly composed of buttons, laser lights, knobs, and slit interaction devices. visitors press the button to start the laser, and then turns the knob left and right to adjust the width of the slit. It can be observed that the spot gradually narrows with the width of the slit, and the width of the spot will first narrow. After reaching a critical value, continuing to narrow the slit will cause the spot to widen, thus understanding Heisenberg's uncertainty principle, which states that a decrease in positional uncertainty leads to an increase in momentum uncertainty. Stilt interactive device: The seesaw interactive device mainly consists of a seesaw, 2 touch screens, electrified glass, 2 fan screens, and a buffer device. The two ends of the seesaw symbolize a pair of conjugate quantities in quantum mechanics, and the two fan screens cyclically play standby recruitment images in standby mode. At this time, the electrified glass is in a transparent state. After visitors sits down.

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.

Heisenberg uncertainty principle: It is a fundamental principle of quantum mechanics, proposed by German physicist Heisenberg in 1927. This principle states that some closely related physical quantities (conjugate physical quantities) of a microscopic particle (such as position and momentum, or azimuth and momentum moment, as well as time and energy, etc.) cannot have definite values at the same time, and the more certain one quantity is, the greater the uncertainty of the other quantity. For example, when we accurately measure the position of a particle, we cannot measure its momentum. To measure the position of an object, the first step is to see it, which is to let light shine on the object and then reflect it into the human eye or microscope. So if you want to measure the position accurately, you have to use short wavelength light. However, the shorter the wavelength of a photon, the greater its energy, which can interfere with the movement of small objects. In summary, long wavelength light can measure momentum but cannot measure position accurately, while short wavelength light is the opposite, just like fish and bears.