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$19.20
$9.60 each
 

Gravitational Blueshift Black Ink Pen

4.8 out of 5 stars rating
490 Total Reviews |
by
Qty:
Writing Ink Colour
Black
Trim Colour
Blue

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About Pens

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Writing Ink Colour: Black Ink Pen

Just because we all have smart phones and laptops doesn't mean the written word is on its way out. In fact, it means just that much more to receive a personal handwritten note! Arm yourself with your own writing mechanism by customising your own one-of-a-kind pen, and continue to make statements in the good ol' fashioned way.

  • Minimum order of 2.
  • Click into action with your own one-of-a-kind pen.
  • Available in multiple colour inks & trim accents.
  • Printed in full vibrant colour that is sure to wow.
  • Extended life writing cartridges.
  • Proudly made in the USA.
  • Creator Tip: To ensure the highest quality print, please note that this product’s customisable design area measures 10.2 cm x 3.4 cm. For best results please add 0.6 cm bleed.

About This Design

Gravitational Blueshift Black Ink Pen

Gravitational Blueshift Black Ink Pen

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. Customise by adding your own text.
FractalFire
Bronze
Artwork designed by
Anchorage, Alaska, United States
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Customer Reviews

4.8 out of 5 stars rating490 Total Reviews
417 total 5-star reviews48 total 4-star reviews10 total 3-star reviews6 total 2-star reviews9 total 1-star reviews
490 Reviews
Reviews for similar products
5.0 out of 5 stars rating
5 out of 5 stars rating
By S.18 September 2021 • Verified Purchase
Black Trim Pen, Black Ink
Zazzle Reviewer Program
Love using for study, it writes so smooth. Love the style I chose . Printed pretty clear
5.0 out of 5 stars rating
5 out of 5 stars rating
By Gravityx9 D.19 May 2026 • Verified Purchase
Red Trim Pen, Black Ink
Creator Review
The ink print is nice, no globs of ink on the paper, as I write. Clear, clean and smooth flow. The colors of the pen design are vibrant. Fun to have a pen that I can easily identify! I'll be definitely purchasing Zazzle ink pens as stocking stuffers for family!
from zazzle.com (US)
5.0 out of 5 stars rating
5 out of 5 stars rating
By T.30 December 2022 • Verified Purchase
Black Trim Pen, Black Ink
Zazzle Reviewer Program
The pens turned out just like the picture. Everything was great.

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gravitygeekastrophysicssciencephysicsastronomyspacefractalredcustom
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Other Info

Product ID: 256912838389045194
Added on 10/7/25, 6:14 am
Rating: G