Wavelengths Quotes

For in 1900 all electromagnetic radiation of longer wavelengths was already known at least to the extent that one could not seek in it the more striking characteristics of X-rays such as, for example, the strong penetrating power.

Please order your minions to leave my radio station alone. We cannot expect the Almighty to abide by your silly wavelength rules.

Along a series of lines running from longer to shorter wavelengths the effect of the electric field becomes greater as the serial numbers increase - that is, as the wavelength decreases.

I was very eager to produce an oscillator for short waves. I was doing science with microwaves, and I would get down to a few millimetres in wavelength, but I wanted to get shorter wavelengths; I wanted to get into the infra-red because I saw there was a lot more to be done there.

In the late 1960s, red and the low green LEDs and the infrared semiconductor lasers had already been developed, but there was no prospect of practical blue light emitters, even in the '70s.

Green, red, and mixed shades of haemins are known. If magnesium is replaced by iron in chlorophyll, green haemins are obtained. Their colour is due to a strong band in the red which is already recognized in chlorophyll.

For X-rays, the phenomenon of diffraction by crystals was a natural consequence of the idea that X-rays are waves analogous to light and differ from it only by having a smaller wavelength.

It's not very fun to do spectroscopy.

I just think white light generation is just one of these remarkable things to see, and actually, you know, one colour of light goes in to just water or any clear anything and out comes all the colours of the rainbow when the pulses are short and intense enough.

There's truth in light. You can tell what elements a star is composed of and the temperature at which it burns by the light it gives off.

This is very similar to astronomy where different magnitudes are assigned to the brightness of an astronomical object, depending on the range of wavelengths being measured.

If diffraction or interference phenomena were to be sought it was therefore necessary, in accordance with the basic principles of wave theory, to select for the test arrangement far smaller decisive dimensions than those employed in corresponding tests with visible light.

I first met the subject of X-ray diffraction of crystals in the pages of the book W. H. Bragg wrote for school children in 1925, 'Concerning the Nature of Things.'

When the shot is afterwards subjected to white light, colour appears because of selective reflection.

The process of radiation may be, and is, continuous - at any rate within limits extending to far smaller quantities than the quantum.

There are many unidentified bands in the spectra of stars. Wide bands are produced by some complex molecules in the interstellar space.

For both reasons, owing to the thermal motion and to the working together of various wavelengths, factors arise which, in a similar manner to the structural factor, exert some influence upon the brightness of the interference points but not upon their location.