In it were a cache of letters including 577 never-opened letterpackets, and the x-ray technique promised a means to analyse these without compromising them. A letter imaged using the technique.

IN a letter to NATURE of July 30 Prof. Bragg tries to show that his neutral-pair theory of X-rays may form the basis of an explanation of the secondary X-ray phenomena which I briefly summarised ...

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Then the high voltage (30-150kv) is applied as a tube voltage, accelerating the electrons into x-rays. Safety measures are taken somewhat haphazardly with Geiger counters and lead sheets.

In a new study in Physical Review Letters, scientists have demonstrated a method to control artificial microswimmers using electric fields and fluid flow. These microscopic droplets could pave the ...

X-ray sources are vacuum tubes that use an electrostatic field to produce X-rays. They accelerate electrons to a high velocity and then suddenly stop them. X-ray tubes, as X-ray sources are sometimes ...

X-rays are a type of electromagnetic radiation with a wavelength between 0.01 and 10 nanometres. X-rays offer an important method for investigating the atomic structure of crystalline materials ...

X-rays can also help vets detect certain tumors, pregnancy and enlarged organs which may lead to a diagnosis such as heart disease or cancer. While your primary concern is your furry friend’s ...

Diagnostic X rays and nuclear medicine examinations lead to a slightly increased risk of cancer. This risk increases with the magnitude of the dose and with the number of procedures. There are no ...

Experts argue that our current standard of care—taking dental X-rays every six to 18 months—is woefully out of date.

However, these batteries are even more prone to self-discharge Toney’s team used the Advanced Photon Source (APS), a powerful ...

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