Sentence examples for roentgen from inspiring English sources

One rad is equal approximately to the absorbed dose delivered when soft tissue is exposed to one roentgen of medium-voltage radiation.

The oldest unit, the roentgen (R), denotes the amount of radiation that is required to produce 1 electrostatic unit of charge in 1 cubic centimetre of air under standard conditions of pressure, temperature, and humidity.

An impoverished forest of hardy oaks well within the normal range of variability of the oak-pine forest of the region occurred down the gradient of exposure and beyond that zone; at exposures of one roentgen or less daily, the pines survived and the forest appeared intact and normal.

The establishment of an internationally accepted unit of measurement at Stockholm in 1925, the roentgen unit, enabled physicists to undertake similar calibration in different centres and provided a means of devising a system of dosimetry.

Effects could, however, be detected by careful measurements of growth down to exposures on the order of 0.1 roentgen per day.

Since then, knowledge about X-rays, sometimes called roentgen rays, and about various forms of radiation have been applied to the development of computerized axial tomography (CAT), magnetic resonance imaging (MRI), and other imaging techniques that are extremely useful modern diagnostic tools.

Lest this sound alarmist, it should be said that grocery shopping in Moscow is a completely roentgen-free experience (with one exception, noted later), thanks to the vigilance of the atomic food inspectors.

For the whole body of a human being, a dose of some 400 roentgens causes radiation sickness and death in half of those exposed to this level.

A thermonuclear weapon dropped on a populated area may deliver, through direct radiation and fallout, doses of a few hundred roentgens or more to people within a radius of some tens of kilometres of the target.

The upper limit to the amount of ionizing radiation (which includes gamma rays, X-rays, and electrons) that an organism can receive without being killed is approximately 1,000,000 roentgens.

His concern was not that we might be overexposed to roentgens but that every time the X-ray trailer, with its crew of young nurses, visited the seminary there would be an increase in the number of seminarians departing for "the world".