The object beam and the reference beam from light source are applied alternately, 50 cps, to
the photocathode of the same multiplier. If the beam intensities are different, there appears …

SINCE Caspersson's pioneer work in the field of microspectroscopy, several complex
electrical and optical instruments have been devised in order to study the absorption of …

The problem of flare in microspectrophotometry is studied experimentally in a specially
designed apparatus. It is demonstrated that by reducing the illuminated area of the …

CURVES giving the light transmission along a measuring line traversing a microscopic
object are obtained with the recording ultramicrospectrophotometers [l, 2, 4, 51. These …

MICKOSPECTROPHOTOMETRY is an effective means of estimating the amounts of various
constituents of single cells. There are, however, many factors which can influence the overall …

A scanning and printing computing microphotometer for analyses of large quantities of
tissue cells and cell structures is described. One pertinent problem in quantitative cytology …

The design of a scanning and integrating microspectrophotometer for studying the
absorption of tissue cells in the wavelength region 2200 to 7000 A is described. The …

IN the ultra-microspectrophotometer for high resolution the absorption spectra of biological
objects can be determined by utilizing the entire resolving power of the microscope. In order …

Most commercial microphotometers have been designed to measure spectrographic plates,
recording transmissions substantially along the major axis of the plate by means either of a …

Behind a beam-splitter in the illuminator, the irradiation of an area conjugated to the object
plane is measured by a silicon photodiode and used as a reference signal. Analog division …