The Planck mass is the Natural units of mass, denoted by ''m''P. ''m''P = (''c'' / ''G'')1/2 ≈ 2.176 × 10-8 kilogram = 21.76 µg where: ''c'' is the speed of light is Planck's constant ''G'' is the gravitational constant The 2002 CODATA recommended value for the Planck mass is 2.176 45(16) × 10-8 kg where the part in parentheses indicates the uncertainty in the last digits shown. This is 21.7645 µg ± 0.0016 µg. It is interesting to note that unlike most of the other Planck units, the Planck mass is on an approximately human scale, being roughly the mass of some fleas. The Planck mass is the value for which the Schwarzschild radius and the Compton length are equal, and equal to the Planck length. == See also == * Planck particle * Orders of magnitude (mass) == External links == * [http://physics.nist.gov/cuu/Constants/index.html The NIST Reference on Constants, Units, and Uncertainty] Natural units Units of mass Constants
:''The issue is that general relativity predicts that smaller black holes can exist within an event horizon of radius less than the Planck length, while quantum mechanics predicts that the mass would probably be outside the event horizon.'' Sounds fascinating, but what does it mean? It means that, at the high energy density limit, (maximum energy density), photon energy could produce gravitationally confined mass particles (black holes). If the electron is a gravitationally confined particle, it is expected to have a relationship to the Planck mass energy. The electron mass is approximately equal to (h/ 4 pi c) times (c/ 3 pi hG) exponent 1/4. The mass energy of two electrons (2 m c squared) is approximately equal to the square root of the product of (2/3) exponent 1/2,(Planck mass energy) times the energy h/(2 pi) squared. When (if) this relationship is verified to be correct, rather than approximate, the gravitational constant value (G) must be very close to 6.6717456 x 10 exponent -11. This is slightly smaller than the current CODATA value (by the factor 0.9996323). User: User:DonJStevens See Talk: Time dilation, See also Black hole electron.
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Planck mass
The Planck mass is the Natural units of mass, denoted by ''m''P. ''m''P = (''c'' / ''G'')1/2 ≈ 2.176 × 10-8 kilogram = 21.76 µg where: ''c'' is the speed of light is Planck's constant ''G'' is the gravitational constant The 2002 CODATA recommended value for the Planck mass is 2.176 45(16) × 10-8 kg where the part in parentheses indicates the uncertainty in the last digits shown. This is 21.7645 µg ± 0.0016 µg. It is interesting to note that unlike most of the other Planck units, the Planck mass is on an approximately human scale, being roughly the mass of some fleas. The Planck mass is the value for which the Schwarzschild radius and the Compton length are equal, and equal to the Planck length. == See also == * Planck particle * Orders of magnitude (mass) == External links == * [http://physics.nist.gov/cuu/Constants/index.html The NIST Reference on Constants, Units, and Uncertainty] Natural units Units of mass Constants
Planck mass
:''The issue is that general relativity predicts that smaller black holes can exist within an event horizon of radius less than the Planck length, while quantum mechanics predicts that the mass would probably be outside the event horizon.'' Sounds fascinating, but what does it mean? It means that, at the high energy density limit, (maximum energy density), photon energy could produce gravitationally confined mass particles (black holes). If the electron is a gravitationally confined particle, it is expected to have a relationship to the Planck mass energy. The electron mass is approximately equal to (h/ 4 pi c) times (c/ 3 pi hG) exponent 1/4. The mass energy of two electrons (2 m c squared) is approximately equal to the square root of the product of (2/3) exponent 1/2,(Planck mass energy) times the energy h/(2 pi) squared. When (if) this relationship is verified to be correct, rather than approximate, the gravitational constant value (G) must be very close to 6.6717456 x 10 exponent -11. This is slightly smaller than the current CODATA value (by the factor 0.9996323). User: User:DonJStevens See Talk: Time dilation, See also Black hole electron.
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