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£69.80
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Gravitational Blueshift Dartboard
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Gravitational Blueshift Dartboard
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. 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
4.5 out of 5 stars rating141 Total Reviews
141 Reviews
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By Jay M.8 March 2021 • Verified Purchase
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Good quality and speedy arrival. Excellent high quality and very clear
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By Bonnie M.20 December 2021 • Verified Purchase
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This is so good had this made for an employee who was retiring. Was able to put the staff photo in the middle and even put icons of his job role around the dart board.
It is a proper heavy dart board I am very impressed. Excellent was slightly worried but it is amazing perfectly clear
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By Stewart E.21 September 2022 • Verified Purchase
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It's really high quality and turned up very quickly. It didn't need to be as good quality as it is for what I wanted it for, but it's very good. Surpassed all expectations. The printing was perfect. It's a really high quality finish. It'll be a shame to ever throw a dart at it.
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Product ID: 256404326118001992
Created on 19/12/2013, 16:01
Rating: G
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