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$186.00
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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, independent of the received angle of the photon. Gravitational blueshift is a natural consequence of conservation of energy and mass-energy equivalence.
Customer Reviews
4.6 out of 5 stars rating139 Total Reviews
139 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Angeline H.11 August 2023 • Verified Purchase
Metal Cage Dartboard
Zazzle Reviewer Program
Was exactly what I wanted for his retirement gift. I knew that the quality of the image wasn't the best but it turned out to be awesome
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Kim d.17 December 2022 • Verified Purchase
Metal Cage Dartboard
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I am so please with the quality of this dartboard and the image is awesome!! My son was in the MC and I can't wait to give this to him for Christmas! The printing is perfect!
from zazzle.com (US)
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Tonya S.27 October 2021 • Verified Purchase
Metal Cage Dartboard
Zazzle Reviewer Program
The personalized dart board will be perfect for my daughter's game room in their new house! It was packaged well and arrived with no damage. It is rather sturdy. Because of the weight, I am going to recommend they use an anchor bolt to secure it or nail into a stud behind the drywall. The printing turned out exactly like I saw it on the preview.
from zazzle.com (US)
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Product ID: 256404326118001992
Posted on 19/12/2013, 4:01 PM
Rating: G