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$79.95
per cushion
Gravitational Blueshift Lumbar Cushion
Qty:
Size
Lumbar Cushion 33 x 53.3 cm
-$12.40
+$20.65
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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. Customise by adding your own text on the reverse side.
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 rating7K Total Reviews
7,045 Reviews
Reviews for similar products
5 out of 5 stars rating
By J.6 June 2019 • Verified Purchase
Throw Cushion, Lumbar Cushion 33 x 53.3 cm
Zazzle Reviewer Program
Pillow is made well and of a good quality fabric, including a zip and inner. Colours are true to those shown in the picture. Delivery time very good from US to New Zealand. Very happy with purchase. Tones are perfect. Clear print and vivid colours.
5 out of 5 stars rating
By Katherine C.12 February 2019 • Verified Purchase
Throw Cushion, Throw Cushion 40.6 x 40.6 cm
Zazzle Reviewer Program
fantastic service .. fantastic product .. really delighted with these lumbar cushions .. thank you !!! 😃😃. Perfect .. love the colour and detail ..
5 out of 5 stars rating
By Kelly K.2 November 2023 • Verified Purchase
Throw Cushion, Lumbar Cushion 33 x 53.3 cm
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)
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Product ID: 256956442958255005
Posted on 16/06/2025, 8:29 AM
Rating: G
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