Website featuring maths formulas

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I have just found a new website featuring maths formulas, physics formulas, chemistry formulas. The site is www.eformulae.com[/URL]. A must Visit site o:)
 
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Its definition of the restitution coefficient in the conservation of momentum section is a rather dumb way to write the numer -1.
 

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Insights auto threads is broken atm, so I'm manually creating these for new Insight articles. In Dirac’s Principles of Quantum Mechanics published in 1930 he introduced a “convenient notation” he referred to as a “delta function” which he treated as a continuum analog to the discrete Kronecker delta. The Kronecker delta is simply the indexed components of the identity operator in matrix algebra Source: https://www.physicsforums.com/insights/what-exactly-is-diracs-delta-function/ by...
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Thread 'Fermat's Last Theorem'

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Thread 'Imaginary Pythagorus'

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