Visible waves

Was this your answer Earth s atmosphere and glass both allow incoming visible waves to pass but not outgoing infrared waves. As a result, radiant energy is trapped. 

The longest and shortest visible waves of the spectrum have wavelengths of 0.000067 cm and 0.000037 cm. Convert these values to (a) angstroms, and (b) nanometers. 

It is an apparatus which records signals photographically on a calibrated time base of a cathode -tube. If these signals are not recorded but appear temporarily as a visible wave form on a fluorescent screen, the device is known as an oscilloscope... 

From Activity 1.5, it can be seen that blue waves carry more energy than yellow waves (a blue flame is hotter than a yellow flame). Yet we often think of blue as being cool and yellow as being warm Blue jeans are cool the sun is warm. There is little relationship between the energy of visible waves and the psychological significance of their colors. 

Pigment molecules or atoms can determine the color of a substance. These molecules or atoms absorb and reflect certain visible waves of energy. The waves that are reflected enter our eyes and interact with our retinas, and we see color. 

The mercury blue line is more difficult to read in a polarimeter than the longer visible wave-lengths. The difficulty is greatly magnified by turbidity in the solution or by incomplete exclusion of the mercury lines in the vicinity of 405 m/u. The measurements should be made in a darkened room, allowing approximately a minute for the eye to grow accustomed to the darkness. The zero point of the instrument should be taken at the same wave-length. 

For small values of XT, namely up to about XT = 3000, this equation gives values almost identical with those calculated from Planck s law. This condition is fulfilled for visible wave lengths at not too high temperatures. 

A related method that has been applied to Langmuir monolayers is sum-frequency generation (SFG) spectroscopy.The signal is generated by mixing an infrared wave of frequency (u,r with a visible wave of frequency CO to yield an output cosp. When co,r matches a vibrational frequency, there is a resonant enhancement of the output. The nonlinear polarization that governs the SFG process can be written... 

HPLC 1s carried out with a high speed chemical derivatization chromatograph (HLC 803, Toyo Soda Mfg. Co.) equipped with two detectors of ultraviolet and visible wave length, but an enzymatic reaction is performed using a Teflon tube (0.5 mm I.O. or 0.4 mn I.D. x 10,000 mm or 20,000 mm) in the thermostated water bath as shown in Fig. 1. In this equipped configuration with two detectors, elution patterns of protein and one of the lipid components can be obtained in one analysis as described in Section 2.6. 

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