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£9.30
£1.55 per coaster
Gravitational Blueshift Square Paper Coaster
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Square
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About This Design
Gravitational Blueshift Square Paper 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. Add 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, independant of the received angle of the photon. Gravitational blueshift is a natural consequence of conservation of energy and mass-energy equivalence.
Customer Reviews
4.7 out of 5 stars rating616 Total Reviews
616 Reviews
Reviews for similar products
5 out of 5 stars rating
By Jake H.24 July 2023 • Verified Purchase
Square Coasters
Zazzle Reviewer Program
Exactly what was wanted for a birthday dinner - dead simple but really well made, a lovely touch to add to the table. Exactly as I requested - changes and wording were done with no problem
5 out of 5 stars rating
By JULIE B.13 October 2021 • Verified Purchase
Ticket Coasters
Zazzle Reviewer Program
we wanted a different way to announce getting married and this was just perfect.
Quality was excellent and arrived on time. printing was perfect - colours were vibrant
5 out of 5 stars rating
By J.6 January 2019 • Verified Purchase
Square Coasters
Zazzle Reviewer Program
Product was ordered just before Christmas on the 12th and was received in the UK in time so service was great. The print was very good, what expected to be solid mats - these were card like pub beermats but they were still well made and made a lovely present. Very good print loved it
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Product ID: 256657733528804742
Created on 09/12/2019, 12:40
Rating: G
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