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$52.70
per set of six
Gravitational Blueshift Coaster
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About This Design
Gravitational Blueshift Coaster
A multi-coloured, fractal representation of gravitational blueshifting; the shifting of light towards the blue end of the spectrum that occurs as photons become more energetic when falling into a gravity well. Customise by adding your own text.
Unlike the more commonly known Doppler blueshift, an apparent effect which is the result of motion towards the observer, gravitational blueshift is real, independent of the received angle of the photon. Gravitational blueshift is a natural consequence of conservation of energy and mass-energy equivalence.
Customer Reviews
4.8 out of 5 stars rating416 Total Reviews
416 Reviews
Reviews for similar products
5 out of 5 stars rating
By Linda C.14 February 2021 • Verified Purchase
Hard Plastic coasters with cork back - set of 6
Creator Review
A great quality product. Have ordered many of these coasters, including other designs for gifts for family & friends. Even have my own se. Extremely good print.
1 out of 5 stars rating
By Janiene P.23 December 2025 • Verified Purchase
Hard Plastic coasters with cork back - set of 6
Order arrived and one of the coasters is damaged. Can you please arrange replacement. Pretty disappointed as this is a Christmas gift. .
5 out of 5 stars rating
By E.29 November 2021 • Verified Purchase
Hard Plastic coasters with cork back - set of 6
Zazzle Reviewer Program
I bought these coasters to go with my mouse pad, also from Zazzle. They arrived in really fast time and were well packaged. The quality of the coaster is better than I imagined, they look very durable and unlikely to blemish like normal coasters. Very pleased with this purchase. The printing is perfect on each coaster, they look very smart indeed. I love them.
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Product ID: 256493679956409019
Added on 16/6/25, 8:20 am
Rating: G
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