Relativity blank greeting cards (3) with envelopes

Description

Great for your geeky friend, and especially great for a physicist. Three (3) blank ivory greeting cards with envelopes. I screen printed E=mc^2 onto the front of each card. It is an original and handmade design by me! I signed the back in small letters.

Great for any occasion. ~4x5.5"

This formula was derived by Albert Einstein and is the mass-energy relationship for special relativity.


Shipping:
First Class USPS for domestic orders. If you buy multiple items, each additional item is only 20 cents extra. For international orders, I will ship it with International First Class USPS. It says that the time "varies" for this method of shipping and I agree -- it REALLY varies!

Added on Nov 29, 2009

Shipping

ship to:	cost:	with another item:
United States	$1.60 USD	$0.20 USD
Canada	$2.10 USD	$0.20 USD
Everywhere Else	$3.60 USD	$0.20 USD

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