The optics worn by soldiers and pilots must work a lot faster, however, as a typical laser beam
lasts only about 10-billionths of a second.
For example, a rapid power shift may cause a monitoring error due to unequal time constants of the monitor detector and test meter, and changes in the high order transverse mode content of the laser beam
may also generate monitoring error due to spatial nonuniformity of the monitor detector.
Reading occurs when a low-power laser beam
is focused on a track and the presence or absence of pits and lands is measured by the amount of reflected light.
A laser beam
and a second "interference" beam focused on the array create a holographic interference pattern that is recorded onto a photopolymer on the disc.
When the excited gas gives off enough energy, photons shoot out of the tube as a colored laser beam
One RAF helicopter was subjected to "a strong laser beam
from a disco".
In rubber and tire applications where spot size is important, the sensor should be mounted with the laser beam
as close to perpendicular to the surface as possible.
The use of a narrowly focused laser beam
and new digital receiver technology allow measurements to be made in industrial environments over distances of 80 feet or more.
Illumination by a laser beam
at night can distract pilots and even cause fatalities if it occurs during a critical phase of flight.
Precision of this technology is derived from two characteristics: laser beam
accuracy as well as robotization of the process.
Pinpoint Laser Systems has introduced the 90-Line, a right-angle beam bender that takes the reference laser beam
from the Microgage 2000 and turns it precisely 90[degrees].
QUALITY not quantity is the matra for north-east trainer Harry Williams these days and his small but select kennel continued in brilliant form when Laser Beam
set new figures for Nottingham's 295m distance in the heats of the William Hill Sprint on Friday, writes Jonathan Kay.