<p>Make each letter a special delivery! Put a personal touch on your mail, or share this useful gift with friends and family. Zazzle’s medium custom stamps fit especially well on greeting card or RSVP envelopes.</p>
Landscape: 2.1" x 1.3" (image: 1.4" x 1.1").
Portrait: 1.3" x 2.1" (image: 1.1" x 1.4").
Image aspect ratio: 3 x 4.
20 stamps per sheet.
Choose from twelve postage denominations:
$0.34: Post Card
$0.49: 1st Class Letter, 1 oz
$0.70: 1st Class Letter, 2 oz or 1 oz odd
$0.91: 1st Class Letter, 3 oz or 2 oz odd
$0.98: 1st Class Large Envelope, 1 oz
$1.12: 1st Class Letter, 3 oz odd
$1.19: 1st Class Large Envelope, 2 oz
$1.40: 1st Class Large Envelope, 3 oz
$1.61: 1st Class Large Envelope, 4 oz
$1.82: 1st Class Large Envelope, 5 oz
$2.03: 1st Class Large Envelope, 6 oz
$5.60: Priority (up to 16 oz)
This equation sums up our current understanding of fundamental particles and forces. It represents mathematically what we call the Standard Model of particle physics. The top line describes the forces: electricity, magnetism, and the strong and weak nuclear forces. The second line describes how these forces act on the fundamental particles of matter, namely the quarks and leptons. The third line describes how these particles obtain their masses from the Higgs boson, and the fourth line enables the Higgs boson to do the job.