Though it may be imprecise, when people refer to the size of a photon, they are talking about the wavelength associated with it. Seen in this way, the photons detected by the human eye are 4000 to 7000 angstroms (an angstrom is 1x10-10 meters). Numbers and measurements on such a scale are hard to imagine, but by comparison, a helium atom is about 1 angstrom, and the largest atoms are about 7. UV photons, X-rays, and gamma rays are smaller. Wavelengths of radio frequency photons can be very big, ranging from a millimeter to many kilometers.
There are two types of beta particles, β + and β -. β - are electrons, while β + are positrons (their antiparticles). The approximate radius of an electron is calculated as follows:
re = e2/(mec2) = 2.8179402894(58) cm -13
Positron are similar to electron in terms of size and mass.
The most recent work suggests a radius of 0.84087(39) fm, where (39) is the uncertainty in the last two numbers. There is some disagreement on the precise radius at this point; two different means to measure it come up with (slightly) different results.
Photons are considered elementary particles without rest mass.
photons have NO MASS
The photon has no mass so therefore it is dimensionless.
Smaller than the parts of an atom. Scientists can PREDICT the width of a single photon, but there is no way to actually measure a single photon.
Gamma rays haven't mass and dimension.
a photon is a photon is a photon
A packet of light energy is called a photon.
thermal agitation, electron impact, and photon impact
A photon with energy 3.0 x 10-19 J A photon with wavelength 525 nm A photon with frequency 7.6 x 1014 Hz A photon with frequency 2 x 1015 Hz
he duble hockey sticks no.
No. But if the photon has a very large wavelength (and a very small frequency) its energy can be very close to zero.
The Motorola Photon 4G is great for streaming movies and music. It has a very large screen, which makes using the phone pleasant. It also has a fast processor.
a photon is a photon is a photon
The energy of a photon is inversely propotional to its wavelength. The wavelength of a blue photon is less than that of a red photon. That makes the blue photon more energetic. Or how about this? The energy of a photon is directly proportional to its frequency. The frequency of a blue photon is greater than that of a red photon. That makes the blue photon more energetic. The wavelength of a photon is inversely proportional to its frequency. The the longer the wavelength, the lower the frequency. The shorter the wavelength, the higher the frequency.
tata photon plus is ratan tata and Javed Siddiqui is houner of PHoton whiz..............
No, a photon is not time travelling
No. A photon is a particle of light. It is massless.
. . . photon.
photon
the mass of a photon is zero
You need to know the photon's frequency or wavelength. If you know the wavelength, divide the speed of light by the photon's wavelength to find the frequency. Once you have the photon's frequency, multiply that by Planck's Konstant. The product is the photon's energy.
No, it could not. A blue photon carries more energy than a red photon, since the blue photon's frequency is higher. That means one red photon wouldn't deliver enough energy to the atom to give it the energy to emit a blue photon.