Teachers Gift Science Nerd Zero Flux Given Gauss Law Physics Science Birthday, End of Term, Thanks-Giving Coffee Tea Mug Unique 11oz White Ceramic Mug.

Arrived on time and looked of good quality

The integral should be on the electric field, E, through the closed surface, dS (though dA is forgiveable). NOT on the electric charge, q. I.e. it should be phi = int E.dS = 0Cup works fine and I love the pun, but it irks me that the equation is incorrect.

Daughter liked this mug because of the silly joke. It holds liquid as intended. It's a standard size mug, print was slightly less bold than the picture but looks fine.