It has no commonly used symbol of its own, but can be denoted by m _ \ text { P } c, where { m _ \ text { P } } is the Planck mass and c is the speed of light in a vacuum.
42.
According to orders of magnitude ( mass ), one Planck mass is about 1 / 10 of the mass of a fruit fly, or 1 / 3 of the mass of an eyebrow hair . talk ) 08 : 42, 10 November 2011 ( UTC)
43.
If so, would they see it radiate itself away before the radiation reached trans-Planckian temperatures ( or, at least, would the observation of trans-Planckian temperatures be delayed until the observed remaining mass was on the order of the Planck mass )?
44.
For example, the unit of mass in atomic units is the mass of an electron, while the unit of mass in Planck units is the Planck mass, a mass so large that if a single particle had that much mass it might collapse into a black hole.
45.
:: : : But could you ( hypothetically ) take a single neutron and accelerate it until its mass exceeded the Planck mass, thus creating a black hole from one neutron ( plus a lot of energy ) ? talk ) 15 : 59, 4 June 2009 ( UTC)
46.
The Planck mass m _ { \ rm P } = \ sqrt { \ hbar c / G } is special because the Compton wavelength and the Schwarzschild radius r _ { \ rm S } = 2 G M / c ^ 2 for this mass are of the same order.
47.
Compared to a proton, for example, the Planck particle would be extremely small ( its radius being equal to the Planck length, which is about 10 " 20 times the proton's radius ) and massive ( the Planck mass being 10 19 times the proton's mass ).
48.
We know a lot about the spectrum of particles up to 10 ^ 10 electron volt, but there are good reasons to think that there are many, many more between 10 ^ 10 eV and Planck mass ( 10 ^ 28 eV ), and we have no idea what they are or what properties they have.
49.
It was utilized in order to solve the so-called Hierarchy Problem of the standard model, that is, to explain why particles not protected by any symmetry ( like the Higgs boson ) do not receive radiative corrections to their mass, driving it to the larger scales such as that of GUTs, or the Planck mass of gravity.
50.
Theorists routinely discuss possible properties of very small black holes ( much smaller than a Planck mass ), but so far no one has provided any compelling claims of having seen ( or made ) any black holes other than the stellar mass and larger ones formed via astronomical process . talk ) 06 : 48, 15 January 2012 ( UTC)
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