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2. Optical mark recognition - Wikipedia

   en.wikipedia.org/wiki/Optical_mark_recognition

   Three Part (Carbonless) – Three sheets are printed on one 105 gsm paper and the other two are printed on 60-70 gsm paper on A4 sheets. The bottom of the first sheet, the top and bottom of the second sheet, and the top of the third sheet are chemically treated so that the impression of the first sheet comes on the second and third sheets.

3. Laser printing - Wikipedia

   en.wikipedia.org/wiki/Laser_printing

   A typical 8.5 × 11 sheet of paper has 0.25-inch (6.4 mm) margins, reducing the printable area to 8.0 by 10.5 inches (200 mm × 270 mm), or 84 square inches. 84 sq/in × 90,000 dots per sq/in = 7,560,000 dots. 1 megabyte = 1,048,576 bytes, or 8,388,608 bits, which is just large enough to hold the entire page at 300 dpi, leaving about 100 ...

4. Undulator - Wikipedia

   en.wikipedia.org/wiki/Undulator

   Working of the undulator. 1: magnets, 2: electron beam entering from the upper left, 3: synchrotron radiation exiting to the lower right. An undulator is an insertion device from high-energy physics and usually part of a larger installation, a synchrotron storage ring, or it may be a component of a free electron laser.

5. Magnetic chicane - Wikipedia

   en.wikipedia.org/wiki/Magnetic_chicane

   A magnetic chicane also called a bunch compressor helps form dense bunches of electrons in a free-electron laser. [ 1 ] [ 2 ] A magnetic chicane makes electrons detour slightly from their otherwise straight path, and in that way is similar to a chicane on a road.

6. Wiggler (synchrotron) - Wikipedia

   en.wikipedia.org/wiki/Wiggler_(synchrotron)

   Schematic diagram of a Halbach Array component in a free electron laser showing the orientation of magnets. A wiggler is an insertion device in a synchrotron.It is a series of magnets designed to periodically laterally deflect ('wiggle') a beam of charged particles (invariably electrons or positrons) inside a storage ring of a synchrotron.

7. Epstein frame - Wikipedia

   en.wikipedia.org/wiki/Epstein_frame

   is the average magnetic path length = 0.94 (constant value) m {\displaystyle m~} is the mass of the sample in kilograms If all conditions are as defined in the standard, the standard deviation of the reproducibility of the values is not greater than 1.5% up to 1.5 T [ clarification needed ] for non-oriented electrical steel and up to 1.7 T for ...