Flukessa, the Second-Law Rebel Mug
Fluctuation theorem: small systems can briefly show entropy decrease with exponentially small probability.
The joke: Tiny victory in tiny systems. The slogan on the mug reads SECOND LAW: BRIEFLY, IN MY FAVOUR.
Source: D. J. Evans, E. G. D. Cohen & G. P. Morriss, PRL 71, 2401 (1993); G. M. Wang et al., PRL 89, 050601 (2002).
Shipping calculated at checkout by destinationMade to order, ships in ~10 days
Details
Size & material11oz · 15oz
Black glossy ceramic mug with a C-handle. Lead- and BPA-free.
- 11oz: 0.33 l
- 15oz: 0.44 l
CareDishwasher & microwave safe
Dishwasher safe (top rack) or hand wash. Microwave safe.
ShippingBy destination
Shipping calculated at checkout by destination.
Made to order: about 10 days of production and handling before it ships.
Returns & replacements21 days
Every item is printed to order, so we can’t accept returns or exchanges for change of mind, or if you ordered the wrong size or colour.
Print defect, misprint, damage or the wrong item? We’ll send a free replacement, or a refund if you prefer. Report it within 21 days of delivery with a photo; no need to send it back.
The physics
Equations
| Symbol | Meaning | Unit |
|---|---|---|
| \(\Sigma_t\) | time-averaged entropy production rate over time t (units of k_B) | \(\mathrm{s^{-1}}\) |
| \(A\) | value of the entropy production rate | \(\mathrm{s^{-1}}\) |
| \(t\) | averaging time | \(\mathrm{s}\) |
Field notes
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