User:Victoria7j/sandbox: Difference between revisions
Victoria7j (talk | contribs) including the orbit of light around a Black hole. |
Victoria7j (talk | contribs) →Light at the Event Horizon of a Black Hole: new section |
||
Line 33: | Line 33: | ||
Mass of Sun 1.989 × 10^30 kg 273.7 meters/sec^2 |
Mass of Sun 1.989 × 10^30 kg 273.7 meters/sec^2 |
||
Radius of the Sun 696,000 kilometers |
Radius of the Sun 696,000 kilometers |
||
== Light at the Event Horizon of a Black Hole == |
|||
{{AFC submission|||ts=20181130024540|u=Victoria7j|ns=2}} |
|||
Revision as of 02:45, 30 November 2018
The Event Horizon of a Black Hole
The place where light fails to be able to escape the gravity of a black hole
At this point light may be in an orbit around the Black hole.
My math is not checked by any known authority.
A rough calculation of the event horizon is where light would travel in an orbit around a black hole For a Black hole about 15 times the mass of our sun, one friend calculates this to be about 48 km There is a known black hole of about this mass about 6,000 light years from the Earth This is one of the closest known black holes.
I tried to find out the relative mass of one kilogram sitting at this point All that I could find was the relative acceleration.
The effects of gravity on all objects near any star, including a black hole can also be calculated
the formula for calculating acceleration due to gravity:
G is the universal gravitational constant, M is mass, and R is distance. (between objects)
g = G*M/R^2, where g is the acceleration due to gravity, G is the universal gravitational constant, M is mass, and R is distance.
the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2. on the Sun, that would be 273.7 meters/sec^2
Mass of Earth 5.972 × 10^24 kg 9.8 m/s2 Radius of Earth 6,371 Km Mass of Sun 1.989 × 10^30 kg 273.7 meters/sec^2 Radius of the Sun 696,000 kilometers
Light at the Event Horizon of a Black Hole
![]() | Review waiting, please be patient.
This may take 3 months or more, since drafts are reviewed in no specific order. There are 1,657 pending submissions waiting for review.
Where to get help
How to improve a draft
You can also browse Wikipedia:Featured articles and Wikipedia:Good articles to find examples of Wikipedia's best writing on topics similar to your proposed article. Improving your odds of a speedy review To improve your odds of a faster review, tag your draft with relevant WikiProject tags using the button below. This will let reviewers know a new draft has been submitted in their area of interest. For instance, if you wrote about a female astronomer, you would want to add the Biography, Astronomy, and Women scientists tags. Editor resources
Reviewer tools
|