SKU: 70717697680

Gravity

Sale price$63.00 Regular price$70.00
Save 10%

Pay in installments of $17.50 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 26 - Jul 31

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

GravityThis book picks up where the last book, Underwood, T. G. (2023). General Relativity, left off, addressing the omission that A fundamental theoretical explanation for the weak attractive gravitational force between matter is also long overdue. We know less about gravity than any other force. The purpose of this book is to try to fill that void. Part I reviews contributions to the understanding of the effects of gravity, starting with extracts from

This book picks up where the last book, Underwood, T. G. (2023). General Relativity, left off, addressing the omission that ÒA fundamental theoretical explanation for the weak attractive gravitational force between matter is also long overdue.Ó We know less about gravity than any other force. The purpose of this book is to try to fill that void.
Part I reviews contributions to the understanding of the effects of gravity, starting with extracts from Kepler and Newton. Part I also describes alternative forms of NewtonÕs law provided by Gauss's law for gravity, and Poisson's equation.
Part II addresses ÒWhat is Gravity?Ó. It begins by reviewing EinsteinÕs unsuccessful attempts at producing a classical unified field theory, a unified theory of electromagnetism and gravity, between 1923 until he died in 1955. But then it moves on to consider quantum entanglement, or some form of entanglement between matter, as a potential source of gravity and to examine the origin of gravity according to the Big Bang theory. In an attempt to answer the question: ÒWhy does matter attract matter?Ó, facts related to gravity and other forces of nature are listed and reviewed.
The underlying cause of gravity remains elusive. From this analysis it is most likely to be found in the initial creation of matter and expansion of the universe, not in quantum theory, nor in a unified theory of electromagnetism and gravity. This appears to suggest that gravity resulted from some form of entanglement between matter after it was driven apart in the expansion of the universe following the Big Bang.
The existence of a very large amount of energy at the time of the origin of the current universe, makes the idea of a universe in which gravitational attractive forces eventually overcome the forces causing the expansion of the universe particularly attractive, in that it provides an explanation for this energy and for the Big Bang without invoking dark matter or dark energy. The gravitational field at the at the surface of the universe, is approximately equal to the gravitational constant.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 70717697680

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.4 ★★★★★
Based on 27 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
A
Verified Purchase
A.Daniels
Houston, US
★★★★★ 5
Great for keys
Color: Black
I haven’t misplaced my keys since I bought it. I do wish it were a little heavier in weight but it gets the job done
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
A
Verified Purchase
Amazon Customer
Charlottesville, US
★★★★★ 1
I do not recommend
Color: White
Very flimsy and cheap
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 9, 2026
A
Verified Purchase
Adin Portillo
Draper, US
★★★★★ 3
Great for simple jewelry
Color: Black
I’ve had it for some time now, it’s okay. Not the material I was expecting. It’s sturdy. It came with a few scratches, I did get a used one though. I recommend this product for simple jewelry for kids, and get something better quality for your more expensive jewelry.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
M
Verified Purchase
Mayyah
Houston, US
★★★★★ 5
Good for the price
Color: Black, Color: Black
Very cute, well made, it is plastic but it’s durable. Better than the higher priced item I was considering.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 5, 2025
A
Verified Purchase
A Elkins
San Leandro, US
★★★★★ 2
Check the measurements
Color: Black
Looked cool but it was the wrong size. It was too big.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 15, 2026

recommand products