the Planck constant is expressed injoule seconds(J·s). The dimensions may also be written asmomentumtimesdistance(N·m·s), which are also the dimensions ofangular momentum. Often the unit of choice iseV·s, because of the small energies that are often encountered...
The speed of light in a vacuum, c0= 2.998 x 108m/s. This value appears in the Planck equation and so we need to cater for it when the emission of radiation is into air. The speed of light in air, cair= c0/n, where n is the refractive index of air = 1.0008. Here’s a compa...
The value of overall electrical potential (area between the electric field and x-axis on Figure 1d) remains constant and corresponds to the value of free LJP. The free liquid junction is not at steady state, and the value of its potential arises as a consequence of the electric field ...
There was ananalysisrecently of gamma-ray arrival times from a burst in a distant galaxy. The author considered what effect a discretization of space might have on the travel speed of photons of differing energy (it would no longer necessarily be constant), and found that to explain the obser...
LED Color Wavelength λ Voltage V Energy E = eV Frequency F = c/λ Planck’s Constant (h) UV 390 nm 2.876 V 4.60 X 10-19 J 7.69 X 1014 Hz h = E / f h = 4.60 X 10-19 J / 7.69 X 1014 Hz h = 5.98 X 10-34 J/Hz What is the actual value for Planck’s constant?
Well, if you can remember all the way back to 2001, the Hubble space telescope, whoseprimary missionwas to measure the Hubble constant, had said it was 72 ± 7 km/s/Mpc. Unsurprisingly, all the numbers that has come in afterwards were around that value: 72. But Planck has come in an...
In this model Planck data determine the cosmological parameters to high precision. We find a low value of the Hubble constant, H0=67.3+/-1.2 km/s/Mpc and a high value of the matter density parameter, Omega_m=0.315+/-0.017 (+/-1 sigma errors) in excellent agree...
Nr1d1 adaptation was fastest in this tissue, with a PS50 value of 3.5±0.4 days. FIG. 4: Influence of adrenal clock function on activity reentrainment after 6-hour phase advance of the LD cycle. (A) Representative double-plot actograms of hWT/aWT and hWT/aP2/C1 animals. Dark phases...
Moreover, there is an critical incorrectness existing in the convergence proof of [45]: the constant C in the final error estimate depends on the numerical solution instead of the real solution, which is unallowable for a priori error estimate. Due to such flaw, their convergence proof is ...
The effect of a constant magnetic field, applied at an angle ψ to the easy axis of magnetization, on the Néel relaxation time τ of a single domain ferro... WT Coffey,DSF Crothers,JL Dormann,... - 《Physical Review B》 被引量: 154发表: 1995年 Charged-particle motion in multidimensio...