Adele

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The Physicist. #Science Is tool of Art / Serpens nisi serpentem conmederit, non fit Draco

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http://universe-review.ca/R15-17-relativity.htm#Kerr
A rotating black hole is very different from a Schwarzschild black hole in that the spin of the black will cause the creation of two event horizons instead of just one (see Figure 09o). The outer event horizon occurs at 
r+ = [GM + (G2M2 - a2c2)1/2] / c2 ---------- (15j) 
The inner horizon (sometimes called the Cauchy horizon) is located at 
r- = [GM - (G2M2 - a2c2)1/2] / c2 ---------- (15k)

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533 days ago

http://universe-review.ca/R15-17-relativity.htm#Kerr
A rotating black hole is very different from a Schwarzschild black hole in that the spin of the black will cause the creation of two event horizons instead of just one (see Figure 09o). The outer event horizon occurs at
r+ = [GM + (G2M2 - a2c2)1/2] / c2 ---------- (15j)
The inner horizon (sometimes called the Cauchy horizon) is located at
r- = [GM - (G2M2 - a2c2)1/2] / c2 ---------- (15k)

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