If you've read How Photographic Film Works, you know that when film is exposed to light, the energy of the photons causes chemical changes in the silver halide grains coating the film. This creates a negative image of what you see through the viewfinder. With a photocopier, however, you ...
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and when they break off of atoms from nuclear fuel, such as uranium or plutonium, act like extremely small "missiles" and can easily penetrate matter. Gamma rays are photons, very much likelight, except they have more energy and can easily pass through several inches...
If you've read How Photographic Film Works, you know that when film is exposed to light, the energy of the photons causes chemical changes in the silver halide grains coating the film. This creates a negative image of what you see through the viewfinder. With a photocopier, however, you ...
How Does a CMOS Sensor Work? A CMOS sensor is made up of a grid of millions of tiny pixels. Each pixel is an individual photosite, often called a well (see Figure 1). When photons enter the photosite, they hit a light-sensitive semi-conductor diode, orphotodiode, and are c...
How Do Solar Panels Generate Electricity? Each solar panel comprises a cluster of PV cells that turn daylight (photons) into solar energy. An inverter then converts the energy to electricity transfers and transfers it to a solar battery, which stores the electricity to power your devices and ap...
Do we really need to use the concept of "photons" to explain the photoelectric effect? Why Einstein never received a Nobel prize for relativity by Stuart Clark, The Guardian, 8 October 2012. The dark politics that prevented Einstein receiving the Nobel Prize for his most famous piece of work...
Why do we need microscopes? How microscopes work Parts of a microscope Polarizing microscopes Fluorescence microscopes Electron microscopes Who invented microscopes? Find out moreWhy do we need microscopes?Photo: A scientist studies leaves for traces of ticks. Photo by Scott Bauer courtesy of US Depar...
How do atoms behave? Electrons are attracted to any positive charge by their electric force; in an atom, electric forces bind the electrons to the nucleus. ... In some respects, the electrons in an atom behavelike particles orbiting the nucleus. In others, the electrons behave like waves fr...
In order toharness solar energyproduction in a form that can power everyday devices, humanity has come up with photovoltaic cells, commonly known as solar panels. Buthow do solar panels work? They were once used almost exclusively in space, powering satellites' electrical systems as far back as...