Definition Given a group G with symmetry elements g and symmetry operators P̂_(g), we denoted the irreducible representations by Γ_(n), where the n labels each different irreducible representation. We then define a set of basis vectors for each representation denoted by $\ket{\Gamma_n j}$, where...
The story of the Curta Calculator, a stylish portable mechanical calculator that doesn’t use electricity and has a surprisingly dramatic origin story.
The Texas Instruments graphing calculator, the long-neglected computing platform required by many high school math students, finally gets some competition.
Educators had a love-hate relationship with graphing calculators when they launched, but students loved them because they were great for games.