Another way to see that quantum physics spreads inevitably is to think about what it is in the photoelectric effect that prevents the same photon from being absorbed by two different atoms, thereby violating conservation of energy, since energy E goes away, and energy 2E gets created. Because t...
To test out some properties, NASA is using special lasers in their facilities. One will be shined through a region of normal space with matter (as a control) and another through a vacuum. If light exits that region through the vacuum with a wavelength that has been red-shifted or light t...
In quantum mechanics, lambda is the symbol for wavelength, which describes how subatomic particles move and interact. Lambda is also used to symbolize wavelength for any wavelike phenomena in science such as the propagation of light inoptical fibernetworking and electromagnetic waves in electrical engi...
These particles are massive with respect to other kinds of radiation; the beta particle, for example, is some 7,000 times smaller. This on the surface might make it seem to be especially dangerous, but in fact the opposite is true: The size of the α-particles means that they penetrate ...
But for other scientists, the suggestion is a leap in logic and the Big Bang is the best description of the creation of the universe we currently have. What if the Big Bang, the prevailing theory of how our universe came to be, never happened? What if the universe hasn’t been expandin...
Quantum Numbers in Chemistry | Definition, Symbol & Examples 8:36 Magnetic Reversals: Overview 5:00 Electromagnetic Waves Types & History | What is an Electromagnetic Wave? 7:51 6:55 Next Lesson Magnet Definition & Parts Electromagnet | Definition, Parts & Uses 4:14 Electromagnetic Ra...
It's defined as energy emitted per unit volume per wavelength. I'm not sure if this includes per solid angle, but I really don't care for this question. I understand that what per wavelength means only partially. For example, If I put λ = 3m in the equation, the energy I get will...
The applications of transformation optics and metamaterials are very diverse. Optical cloaking, for instance, is achieved by designing metamaterials to manipulate light around an object, which makes the object invisible to the naked eye. Although this invisibility cloak technology is in its initial stag...
Since 1978, rainbows have become a universal symbol of pride for the LGBTQ+ community. Gilbert Baker, a gay man, artist and drag queen, designed the rainbow flag for the San Francisco Gay Freedom Day parade on June 25, 1978. Baker's original design featured eight colors, each with a diff...
For perspective, one nanometer is one billionth of a meter, smaller than the wavelength of visible light. The diameter of an atom ranges from about 0.1 to 0.5 nanometers.12 Special Considerations The vision of an endlessly empowered and interconnected future brings both challenges and benefits. Sh...