Surgelle, the Full-Moon Thief Mug
Opposition surge: the Moon brightens sharply near zero phase angle (full moon).
The joke: Faint-object observers dread full moon. The slogan on the mug reads FULL MOON. OPPOSITION SURGE. NO DARK TIME.
Source: B. J. Buratti, J. K. Hillier & M. Wang, Icarus 124, 490 (1996).
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 |
|---|---|---|
| \(B(g)\) | opposition (shadow-hiding) enhancement | — |
| \(B_0\) | amplitude of the surge | — |
| \(g\) | phase angle | — |
| \(h\) | angular-width parameter | — |
Field notes
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