VGuidelines for exposure to visible and infrared radiation were first proposed by ICNIRP in 1997. Related guidelines on limits of exposure to ultraviolet radiation (UVR) and laser radiation have been published. This document presents a revision of the guidelines for broadband incoherent radiation. Health Phys. 105(1):74Y96; 2013

An inexpensive green laser pointer was found to emit 20 mW of infrared radiation during normal use. This is potentially a serious hazard that would not be noticed by most users of such pointers. We find that this infrared emission derives from the design of the pointer, and describe a simple method of testing for infrared emissions using common household items.

The case histories of two individuals exposed to thermal radiation emitted from an electric oven and range were presented. In one patient, earlier exposure to medical diathermy appears to have initiated delayed or late-appearing, capsular cataracts. Instead of the anticipated slow progression, the cataractogenesis was accelerated following recent, repeated exposure to the intense, infrared radi...

Radiochromic film is tested for its broad-band response to ultraviolet (UV) B (290-320 nm) and A (320 nm400 nm), visible and infrared radiation produced by a solar simulator and examined for dosimetry in ultraviolet radiation. Results show that MD-55-2 radiochromic film in solar and fluorescent light sources responds almost exclusively to broad-band UVA radiation with negligible colouration fro...

Actinic elastosis also known as solar elastosis is a degenerative change in the dermis. It is caused due to chronic exposure to electromagnetic radiation most commonly solar radiation and can also be due to infrared radiation exposure [1] . UVB wavelength (290-320nm) most commonly leads to solar elastosis; however UVA (320400nm) and sometimes infrared radiation (>700nm) can also aggravate the c...

Rcicliation profiles in an ablating flat plate Air-Teflon laminar boundary layer have been studied both experimentally and theoretically. The experiments were conducted in a one atmosphere, 3000 60U0 K, subsonic free stream produced by an arc jet. Spatially resolved radiation profiles within the boundary layer were obtained in both the visible and near infrared. Spatially integrated boundary la...

where Z is the refractive index defined as the ratio of the speed of light in a vacuum to the speed of light in the given medium, date from this period. In more modern times, infrared, ‘‘beyond red,’’ radiation was discovered by William Herschel in 1800. He found that the temperature recorded by a thermometer increased from the violet to the red in the visible region. Going beyond the red he fo...

We present optical and mid-infrared photometry of a statistically complete sample of 29 very faint dwarf galaxies (Mr > −15 mag) selected from the SDSS spectroscopic sample and observed in the mid-infrared with Spitzer IRAC. This sample contains nearby (redshift z . 0.005) galaxies three magnitudes fainter than previously studied samples. We compare our sample with other star-forming galaxies t...

Drying characteristics of rough rice (variety of lenjan) with an initial moisture content of 25% dry basis (db) was studied in a hot air dryer assisted by infrared heating. Three arrival air temperatures (30, 40 and 50C) and four infrared radiation intensities (0, 0.2 , 0.4 and 0.6 W/cm) and three arrival air speeds (0.1, 0.15 and 0.2 m.s) were studied. Bending strength of brown rice kernel, pe...

Multi-spectral imaging systems typically require the cumbersome integration of disparate filtering materials and detectors in order to operate simultaneously in multiple spectral regions. Each distinct waveband must be detected at different spatial locations on a single chip or by separate chips optimised for each band. Here, we report on a single component that optically multiplexes visible, M...