What happens if photons touch each other? Why is using mirrors to generate electricity not a common practice? In what way are liquid and electrical circuit analogous? What causes heating effect of electric current? When you turn on the light switch for your...
When he did this, he was able to detect electrons being emitted from the surface. This was Einstein's explanation: If the energy in light comes in bundles, then one can think of light as containing tiny lumps, or photons. When these photons strike a metal surface, they act like billiard...
In 1900, Max Planck suggested instead that photons must be particles because of the way radiation behaves. This opened the door for Einstein to suggest in 1905 that light is both particles and waves. His explanation is based on the photoelectric effect. This is the way a sheet of metal emit...
To see why this makes sense, let's look at the example of an electron and a positron (the antiparticle of the electron) annihilating into two photons (light). Before the interaction occurs, we have an electron with charge (-e) and a positron with charge (+e), so the net charge ...
When the reaction center of chlorophyll receives energy from photons (i.e. particles of light), the light excites electrons in the chlorophyll to the point that some leave chlorophyll to join other chemicals (like pheophytin). In this scenario, as light s Most plants are green because: ...
12. Are there any particles that behave oppositely to the properties or states of photons? 12.是否存在与光子性质或状态相反的粒子? 13. Will the Bose-Einstein condensate be widely used in the future? 13.玻色-爱因斯坦冷凝体未来会被广泛使用吗?
The quantum yield of a chemical compound is the amount of photons emitted divided by the number of photons absorbed. The extinction coefficient measures how strongly a chemical compound absorbs light. Fluorescence spectroscopy is commonly used in bioscience and chemistry to analyse samples and measure ...
As the saying goes, don’t look a gift horse in the mouth. In our case, the gift horse, having traveled some 93 million miles from the sun, is the flock of photons, the light itself. It would be hypocritical of me to claim that I love every kind of light equally – not even clo...
“shadow” of diminished light intensity occurs in the reflected light since these photons are no longer totally internally reflected from the gold surface. The position or angle of this “shadow” in the reflected light profile is sensitive to changes in refractive index occurring above the gold ...
The concept of CMOS sensors was first proposed in the late 1960s, but commercial manufacturing didn't become feasible until the 1990s due to limitations in microfabrication technology. Today, these sensors are widely used in consumer electronics, automotive systems, surveillance, and medical imaging....