When your hotel is in Cambridge
Posted March 2nd, 2008 by Laura Scott
...you might expect to see in the hotel a bedspread like this. Kate told me immediately that she could define each one. Of course I felt like a mental mouse.
So here's a challenge: What do these formulae mean? (And John and Rad, you can answer only one -- give everyone else a chance!)
Quite an auspicious way to kick off a week of Drupal, I'd say.
well the first one is a bunch of thermodynamics equations in the center. then there is the law of gravitation (f = g*m*M/d^2), the famous einstein equation of the stationary energy of a particle (e = mc^2), V = IR is the equation that tells you the voltage in a circuit with R resistance and I flow (don't know the english term for this). i dont know the T=2pisqrt(1/a), it might be thermodynamics too, but in this notation i dont know what the a means. a = f/m is the newtonian law of force, f=m*a rearranged.
Hmm,
1. Perfect Gas Equation P V = n R T, P= pressure, T=absolute temperature, R=constant, V=volume,
n = mole number
2. Mass - Energy equivalence (Relativity) E = m c^2, m= mass, c = speed of light
3. Ohm's Law V = R I, V=electric potential/tension, I=intensity, R=resistance
4. Some sort of oscilatory period equation: T = 2 pi sqrt(1/a),
T=period (s), sqrt(a) is the angular frequency (rad/s)
5. Delta U = m g y is a potential equation, a gravitational potential it seems,
m = mass, g = gravity, y = coordinate
6. a = f/m is Newton's second law f = m a, f=force, m =mass, a=acceleration
7. Last but not least, F = G M m / d^2 is the Universal Gravitational Law,
G is the Universal Gravitational constant, M and m, are masses and
d = distance between the center of mass of each body/mass point.