Gamma wave - Wikipedia
In a vacuum all light travels the same speed no matter what the wavelength or frequency. Gamma radiation has a smaller wavelength and. The ONLY similarity between a gamma ray and a gamma brain wave is that their frequency is extremely fast, with a small amplitude. Gamma brain waves are a. This broad range of wavelengths is known as the electromagnetic spectrum. Gamma-rays have frequencies greater than about 1, cycles per second energy, according to Einstein's famous equation E=mc^2, with about.
If you consider only optical light, then you will probably say that light can penetrate glass, air, and water, but light easily gets blocked by solids, like plastics and metals, or perhaps the clouds in the sky. If you notice in this video, IR light behaves very differently from visible light. While visible light gets blocked by smoke, an IR camera can penetrate smoke to see a fireman in a smoke-filled room. Using visible light cameras, you could easily film someone swimming in a pool of water, however, water blocks IR light, so you would not be able to see the swimmer underwater with an IR camera.
The same things goes for glass—while visible light easily penetrates a plate of glass, if you put a person behind a glass window, the person would be invisible to an IR camera. My favorite demonstration is the black plastic bag.
Obviously, we cannot see a person's hand if they put it inside a black plastic bag, but an IR camera can! As mentioned above, Earth's atmosphere which we usually think of as transparent is actually only transparent to certain wavelengths of light.
This brings a distributed matrix of cognitive processes together to generate a coherent, concerted cognitive act, such as perception. This has led to theories that gamma waves are associated with solving the binding problem. Researchers performed this study using optogenetics the method of combining genetic engineering with light to manipulate the activity of individual nerve cells.
What Are Gamma-Rays?
The protein channelrhodopsin-2 ChR2which sensitizes cells to light, was genetically engineered into these mice, specifically to be expressed in a target-group of interneurons. These fast-spiking FS interneurons, known for high electrical activity, were then activated with an optical fiber and laser—the second step in optogenetics.
This is the first study in which it has been shown that a brain state can be induced through the activation of a specific group of cells. Neuroscientist Sean O'Nuallain suggests that this very existence of synchronized gamma indicates that something akin to a singularity - or, to be more prosaic, a conscious experience - is occurring.
As mentioned above, gamma waves have been observed in Tibetan Buddhist monks. Gamma-rays fall in the range of the EM spectrum above soft X-rays. A picometer is one-trillionth of a meter. Gamma-rays and hard X-rays overlap in the EM spectrum, which can make it hard to differentiate them. In some fields, such as astrophysics, an arbitrary line is drawn in the spectrum where rays above a certain wavelength are classified as X-rays and rays with shorter wavelengths are classified as gamma-rays.
BBC Bitesize - GCSE Physics (Single Science) - Transverse and longitudinal waves - AQA - Revision 3
Both gamma-rays and X-rays have enough energy to cause damage to living tissue, but almost all cosmic gamma-rays are blocked by Earth's atmosphere. A few years later, New Zealand-born chemist and physicist Ernest Rutherford proposed the name "gamma-rays," following the order of alpha rays and beta rays — names given to other particles that are created during a nuclear reaction — and the name stuck.
Gamma-ray sources and effects Gamma-rays are produced primarily by four different nuclear reactions: Nuclear fusion is the reaction that powers the sun and stars.
It occurs in a multistep process in which four protons, or hydrogen nuclei, are forced under extreme temperature and pressure to fuse into a helium nucleus, which comprises two protons and two neutrons. The resulting helium nucleus is about 0.
The rest is in the form of neutrinoswhich are extremely weakly interacting particles with nearly zero mass. In the later stages of a star's lifetime, when it runs out of hydrogen fuel, it can form increasingly more massive elements through fusion, up to and including iron, but these reactions produce a decreasing amount of energy at each stage.
Another familiar source of gamma-rays is nuclear fission. Lawrence Berkeley National Laboratory defines nuclear fission as the splitting of a heavy nucleus into two roughly equal parts, which are then nuclei of lighter elements.