
Title

The Black Holes: Einstein's field equations and Black Holes,Used
Delivery time: 8-12 business days (International)
This book reviews the mathematical and physical aspects of Black Holes. In particular a Schwarzschild Black Hole was discussed: its singularity aspect, analytical extension of the spacetime and CarterPenrose diagram are explicitly shown. It considers also the effect of electric charge and rotation of the Black Hole. New physical effects that arise due to these two parameters of charge and angular momentum are also discussed. The most interesting aspect of charge and rotation is that timelike singularities deep inside the Black Holes make possible a time travel into new universes. In the Schwarzschild Black Hole case the singularity is spacelike and such possibilities do not arise. Finally particle creation by Black Holes due to Hawking is discussed briefly.
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Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
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Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
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