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A replica of the ghost trap used in the original film. The proton pack, designed and built by Dr. Egon Spengler, is a man-portable cyclotron system (and indeed Dr. Peter Venkman refers to the proton packs in one scene as "unlicensed nuclear accelerators"), [3] that is used to create a charged particle beam—composed of protons—that is fired by the particle thrower (also referred to as the ...
The proton radius puzzle is an unanswered problem in physics relating to the size of the proton. [1] Historically the proton charge radius was measured by two independent methods, which converged to a value of about 0.877 femtometres (1 fm = 10 −15 m).
An inconsistency between proton charge radius measurements made using different techniques [12] was known as the proton radius puzzle, but more recent measurements show consistent results. [13] The CODATA recommended values are: proton: 8.4075(64) × 10 −16 m [14] deuteron: 2.127 78 (27) × 10 −15 m [15]
The size, or root mean squared (RMS) charge radius, of the proton (the smallest nuclide) has a 2018 CODATA recommended value of 0.8414 (19) fm (10 −15 m), although values may vary by a few percent according to the experimental method employed (see proton radius puzzle). Nuclide size ranges up to ≈ 6 fm.
Since the proton is composed of quarks confined by gluons, an equivalent pressure that acts on the quarks can be defined. The size of that pressure and other details about it are controversial. In 2018 this pressure was reported to be on the order 10 35 Pa, which is greater than the pressure inside a neutron star. It was said to be maximum at ...
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For in natural (Planck) units, the strength of gravity simply is what it is, a primary quantity, while the proton's mass is the tiny number 1/13 quintillion. [ 21 ] While it is true that the electrostatic repulsive force between two protons (alone in free space) greatly exceeds the gravitational attractive force between the same two protons ...