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It Takes A Lot Of Work To Exist (Thermodynamics) Postcard

4.9 out of 5 stars rating
15870 Total Reviews |
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Signature Matte
18 pt thickness / 120 lb weight Soft white, soft eggshell texture
-$0.30
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Size: Standard Postcard

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  • Dimensions: 5.6" L x 4.25" H; qualified USPS postcard size
  • High quality, full-color, full-bleed printing on both sides

Paper Type: Signature Matte

Our Signature Matte paper is a customer favorite—smooth to the touch with a soft eggshell texture that elevates any design. Its sturdy 18 pt weight and natural feel make it the ideal choice for timeless, sophisticated events.

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About This Design

It Takes A Lot Of Work To Exist (Thermodynamics) Postcard

It Takes A Lot Of Work To Exist (Thermodynamics) Postcard

No need to be a physics major or physicist to enjoy any of these gifts featuring the Carnot heat engine, along with the wry truism saying "It Takes A Lot Of Work To Exist 24 Hours A Day, 7 Days Per Week, 365 Days Per Year". Specifically, these gifts feature the second law of thermodynamics. Since any thermodynamic engine requires such a temperature difference, it follows that useful work cannot be derived from an isolated system in equilibrium; there must always be an external energy source and a cold sink. Educational physics attitude gifts for all who work in the thermodynamic sense of the word!
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Customer Reviews

4.9 out of 5 stars rating15.9K Total Reviews
14436 total 5-star reviews1012 total 4-star reviews209 total 3-star reviews80 total 2-star reviews133 total 1-star reviews
15,870 Reviews
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5.0 out of 5 stars rating
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By Ray A.September 30, 2025 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Very pleased with my order. All my prints were manufactured to a very high standard to my exact specifications and edited additions.
5.0 out of 5 stars rating
5 out of 5 stars rating
By Paul I.February 4, 2021 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Creator Review
I had never seen these classic science fiction images and most of my friends have not seen them either. They are like little treasures! Amazing quality and fun to send people!
5.0 out of 5 stars rating
5 out of 5 stars rating
By Jennifer W.November 28, 2022 • Verified Purchase
Post Card, Size: Standard Postcard, Paper: Signature Matte, Envelopes: None
Zazzle Reviewer Program
I joined Postcrossing a few months ago and wanted postcards to represent my state well. I found them on Zazzle. I purchased numerous cards and was impressed with all of them. Excellent! The colors are beautiful. The cards have the exact look I wanted. I couldn't be happier.

Tags

Postcards
carnot heat enginethermodynamicssecond law of thermodynamicsworksayingtruismphysicsphysicistgeekhumor
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carnot heat enginethermodynamicssecond law of thermodynamicsworksayingtruismphysicsphysicistgeekhumor

Other Info

Product ID: 239098410095907845
Created on: 7/28/2010, 4:37 AM
Rating: G 
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