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An illustration of the heel effect in an x-ray tube. In X-ray tubes, the heel effect or, more precisely, the anode heel effect is a variation of the intensity of X-rays emitted by the anode depending on the direction of emission along the anode-cathode axis. X-rays emitted toward the anode are less intense than those emitted perpendicular to ...
In chess, an X-ray or X-ray attack is a tactic where a piece indirectly controls a square from the other side of an intervening piece. Generally, a piece performing an X-ray either: effects a skewer, [1] [2] [3] indirectly attacks an enemy piece through another piece or pieces, or; defends a friendly piece through an enemy piece.
The x-ray tube was removed to render the apparatus harmless before being put on public display, due to the possible risk of radiation burn or other health problems if it were switched on. The risk of radiation burns to extremities was known since Wilhelm Röntgen 's 1895 experiment, but this was a short-term effect with early warning from ...
[7] [11] [3] [9] Rake metal detector A garden rake that rotates back and forth to monitor the grounds for the MI6 operatives. Used to detect Bond's Walther PPK. [81] Whistle-activated keychain A multi-purpose keychain that can release stun gas or explode depending on the tune whistled. [3] [8] [1] It also has a lock pick that can open 90% of ...
X-ray optics is the branch of optics dealing with X-rays, rather than visible light. It deals with focusing and other ways of manipulating the X-ray beams for research techniques such as X-ray diffraction , X-ray crystallography , X-ray fluorescence , small-angle X-ray scattering , X-ray microscopy , X-ray phase-contrast imaging , and X-ray ...
In general, an X-ray's beam intensity is not uniform. When it focuses to a target, a conical shape appears (divergent beam). The intensity of the beam from the positive anode side is lower than the intensity from the negative cathode side because the photons created when the electrons strike the target have a longer way to travel through the rotating target on the anode side.
A calcaneal spur (also known as a heel spur) is a bony outgrowth from the calcaneal tuberosity (heel bone). [1] Calcaneal spurs are typically detected by x-ray examination. [2] It is a form of exostosis. When a foot is exposed to constant stress, calcium deposits build up on the bottom of the heel bone. Generally, this has no effect on a person ...
Observations of X-ray burst sometimes show X-ray spectra indicating radius expansion. Therefore, the X-ray flux at the peak of the burst should correspond to Eddington luminosity , which can be calculated once the mass of the neutron star is known (1.5 solar masses is a commonly used assumption).