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£32.22
each
Gravitational Blueshift Metal Lunch Box
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Colour
Blue
About Metal Lunchboxes
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About This Design
Gravitational Blueshift Metal Lunch Box
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
4.6 out of 5 stars rating80 Total Reviews
80 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Nigel G.25 March 2022 • Verified Purchase
Stainless
Creator Review
Amazing build quality ideal for kids especially for school use very tough box made of steel fantastic rocket design high quality printing I am so pleased with the lunch box it passes all expectations it ticks all the boxes high quality at its best very cool. The printing is very high quality
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Robert C.23 November 2020 • Verified Purchase
White
Zazzle Reviewer Program
Perfect quality lunch box. High quality materials used, solid and well presented. Delivered on time as stated, well packaged. Perfect print and colourful
5.0 out of 5 stars rating
5 out of 5 stars ratingBy Anonymous1 September 2020 • Verified Purchase
White
Zazzle Reviewer Program
Arrived quickly and I am impressed by the quality. Printing detail is very crisp.
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Product ID: 256554626670783328
Created on 12/11/2017, 8:49
Rating: G