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Old 07-11-2023, 01:05 PM   #134
DynaEtch
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Speaking of the chalkboards, some mistakes


2022 Upper Deck Cosmic - The Chalkboard #CB-3 - Rayleigh-Jeans Law
Courtesy of COMC.com

Spectral radiance should be inversely proportional to the 4th power of wavelength. So unless that's really bad typeface, that shouldnt be lamda*4 in the denominator...should be lamda^4th power. Also considering the Rayleigh-Jeans law is flat out wrong at higher frequencies, would make more sense to have Plank's law be the card.


2022 Upper Deck Cosmic - The Chalkboard #CB-2 - Newton's Second Law Of Motion
Courtesy of COMC.com

The denominator here is actually 0, which blows up the expression entirely to infinity and is wrong. I assume it's a typo and one of those should be t0. Even with that, this is certainly not a meaningful way to express Newtons second law. They could have either used F=ma or F=dp/dt for constant mass...or a more complicated expression for variable mass. But not this.


2022 Upper Deck Cosmic - The Chalkboard #CB-8 - Uncertainty Principle
Courtesy of COMC.com

The expression on the right should be h-bar/2, not just h-bar, if being rigorous. (deltas meaning standard deviation)


2022 Upper Deck Cosmic - The Chalkboard #CB-10 - Schrodinger Equation
Courtesy of COMC.com

The h's in this should be h-bar, and also the expression before Psi on the left should be contained in parentheses (again if being rigorous).


2022 Upper Deck Cosmic - The Chalkboard #CB-6 - Wave Equation
Courtesy of COMC.com

The wave equation is a famous second order partial differential equation. Who knows what UD is doing here.

These noticed so far..could be missing some.
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