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Description
A Relatively Painless Guide to Special RelativitySerious and accessiblefinally the special relativity course book that both physics majors and lifelong learners deserve. Special relativity challenges ones physical intuition of space, time, matter, and energy in a way that few other topics in physics do. Yet the subject is often treated as an extra in undergraduate coursessomething to be picked up in a few random lectures and presented as a combination of geometric and logical puzzles (seemingly with
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.5 ★★★★★
Based on 899 reviews
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Product Reviews
★★★★★ 4
Pieces chewed off
Color: white & green
My Aussiedoodle loves it. I throw it down the hallway, it bounces crazy, and he chases it. The only complaint is that he can't chew much of the ball part. So now I have to have it put away and brought out for special playtime.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 9, 2026
★★★★★ 5
Made extremely well!
Great. My aggressive chewer hasn’t managed to wreck it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 14, 2025
★★★★★ 4
Not for heavy chewers
Color: Red + Yellow
Great concept, but for heavy chewers it's a no.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 1, 2026
★★★★★ 5
Great fun
Color: Red + Yellow
Dogs love it and very durable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 8, 2025
★★★★★ 3
Bigger than expected.
Color: Red + Yellow
It's nice for a large breed dogs but not for my 8 lbs. she was not interested on this chew toy.
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Reviewed in the United States on February 2, 2025
