Surprise! Did You Know Your Iphone Calculator was a Scientific Calculator in Disguise?

It was purely by accident that i discovered this. I was trying to figure something out on my iPhone Calculator and was interrupted by a co-worker. 

I placed my iPhone back into my geeky little holster, which sits horizontally.

When I took it out, I saw somethign that I never saw before on my iPhone and it took me completely by surprise.