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$104.90
per cushion
Gravitational Blueshift Lumbar Cushion
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Size
Lumbar
-$20.40
+$22.65
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About This Design
Gravitational Blueshift Lumbar Cushion
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
4.8 out of 5 stars rating9.7K Total Reviews
9,655 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Lora S.15 July 2022 • Verified Purchase
Throw Pillow, Lumbar
Creator Review
I love putting my art collages on these pillows. The image is perfectly printed. And I love the outdoor fabric option... [ the pillow does not get saturated, even in a deluge]! The quality is awesome - these pillows are plump, and DO NOT FLATTEN with use. The images on front and back are perfectly registered. Awesome printing!
from zazzle.com (US)
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Kelly K.2 November 2023 • Verified Purchase
Throw Pillow, Lumbar
Zazzle Reviewer Program
Love toile and toile with little animals? I mean what more can you ask for??!! Got it as a gift for a friend and she loved it! Did not see it but she loved it.
from zazzle.com (US)
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Cathie F.9 January 2019 • Verified Purchase
Throw Pillow, Lumbar
Zazzle Reviewer Program
God quality.
Easy to custom design with good choice of colours,. Great result for our custom designed bed cushions for our B&B
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Product ID: 189288995196520750
Added on 19/12/13, 3:35 pm
Rating: G