login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A228817 Decimal expansion of Planck force: F_P = c^4/G, in SI units. 6
1, 2, 1, 0, 2 (list; constant; graph; refs; listen; history; text; internal format)
OFFSET

45,2

COMMENTS

According to the law of universal gravitation, the attractive force (F) between two bodies is proportional to the product of their masses (m_1 and m_2), and inversely proportional to the square of the distance, r, between them. Newton's formula is F = G*m_1*m_2/r^2, where G is the constant of gravitation. Using both the Planck force (F_P) and Einstein's formula E = m*c^2, the law of universal gravitation could be written as F = (G/c^4)*m_1*c^2*m_2*c^2/r^2 = E_1*E_2/(F_P*r^2), where E_1 and E_2 are the energies of the bodies.

LINKS

Table of n, a(n) for n=45..49.

FORMULA

Equals A183001/A070058.

EXAMPLE

F_P = c^4/G = 8077608713062490229263800746151696 (m^4/s^4)/(6.67384...*10^-11 (m^3)/(kg*s^2)) ~ 1.2103...*10^44 (kg*m/s^2), where c is the speed of light in vacuum and G is the Newtonian constant of gravitation.

CROSSREFS

Cf. A003678, A070058, A183001, A228818.

Sequence in context: A326474 A266886 A267546 * A110399 A193275 A182033

Adjacent sequences:  A228814 A228815 A228816 * A228818 A228819 A228820

KEYWORD

nonn,cons

AUTHOR

Omar E. Pol, Sep 26 2013

EXTENSIONS

a(49) corrected by Ivan Panchenko, May 21 2019

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified June 18 04:41 EDT 2021. Contains 345098 sequences. (Running on oeis4.)