Divide the speed of light in a vacuum (in meters/second) by the wavelength (which you must convert to meters); that will give you the frequency in hertz. The frequency will be the same for different substances.
300nm is the "wavelength". Wavelength and frequency are related by the following equation: λ = v / f Where λ (gamma) is the wavelength, v is the speed of the wave (typically c, the speed of light (3×10^8 m/s)), and f is the frequency. So f = v / λ. So a 300nm wave, (λ = 300*10^-9 m) has a frequency of (3e8 / 300e-9) = 1e15Hz or 1,000THz. 500nm: (3e8 / 500e-9) = 6e14Hz or 600THz. See link.
frequency = 1/s c = m/s lambda = m (wavelength) c/lambda m/s/m= frequency 1/s 300,000E9mm/s / 300nm > 300,000E9nm/s / 500nm So no, the shorter the wavelength, the higher the frequency. This is why very small waves such as gamma waves are very dangerous; they have a very high frequency compared to feet long waves such as Radio waves.
1 micrometer (1,000 nm)
Blue
Resolving power = 0.5x wavelength/ numerical aperture (n sin theta)n sin theta in most microscope have value = 1.2 and 1.4therefore:R. P. = 0.5x500nm/ 1.25 = 200nm = 0.2 microns.(conv. 1000nm = 1micron).
425-500nm
The question makes little sense, but sound is a longitudinal wave, light is a transverse wave. Light avergaes around 500nm wavelength, sound audible to the human ear ranges from a few cm to 20m or so.
1) E=c/wavelength (change to meters) 2) E(in J)=hv 3) E(in J) x (6.022x10^23) x 2 mol 4) Do your final conversions ( IF THEY ASK FOR A UNIT OTHER THAN JOULES)
They vary in size between 0.1 - 1.2 micrometres.
A 500nm wave has a wave length of 500nm. The nano- prefix means × 10^-9 → 500 nm = 500 × 10^-9 m The centi- prefix means × 10^-2 → 1 cm = 1×10^-2 m → 1 cm ÷ 500 nm = (1×10^-2 m) ÷ (500×10^-9 m) = (1/500) × 10^(-2 - -9) = 0.002 × 10^7 = 2 × 10^4 = 20,000 waves.
White absorbs the least light. The "pigment" that causes the color white does not absorb any other colors, so all the colors are reflected back to you as "everything", or white. Think of white light. There are many colors hidden in white light, and by the process of refraction, white light can be separated and a rainbow of colors revealed. Black, on the other hand, is a pigment that absorbs all colors of light. Since no color is present, what you see is essentially a reflection of "nothing".
Sample illumination is achieved in different ways in a light and electron microscope.In a light microscope, the sample is illuminates with light (photon energy)In an electron microscope, the sample is illuminated by a beam of electrons.Devon