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News & Features > Crossword Answers to May-June Scanner Puzzle These are the answers to the crossword puzzle published on p. 8 of the May-June 2005 print edition of the NCA Scanner. View or download the Scanner PDF file (676k). Please be aware that the following links will take you off the NCA eScanner website and could expose your computer to malicious code and/or pop-up windows. |
Across1. Destructive. Interference with dark consequences. Destructive interference of light waves causes dark bands in an interference pattern: http://www.olympusmicro.com/primer/lightandcolor/interference.html 7. Linkabit. Pre-Qualcomm venture for Jacobs (with 15 down - Viterbi). The early history of Linkabit parallels the rise of the telecommunications industry in San Diego. Linkabit merged with M/A-COM and was later a subsidiary of Titan Corporation. The present status of Linkabit is unknown. http://www.ieee.org/organizations/history_center/legacies/jacobs.html 8. Iris. Adds color to biometrics. The iris is a biometric identifier like a fingerprint: http://ctl.ncsc.dni.us/biomet%20web/BMIris.html 11. Merit. A nice figure. A figure of merit is a measure of efficiency or effectiveness: http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=figure+of+merit 12. Poisson. A distribution of events over time, or a fish. The Poisson distribution is used to model the number of uncorrelated occurrences of an infrequent event over time or area: http://stat.tamu.edu/stat30x/notes/node70.html http://www.cmh.edu/stats/definitions/poisson.htm http://www.math.sfu.ca/~cschwarz/Stat-301/Handouts/node64.html http://machaut.uchicago.edu/cgi-bin/FR-ENG.sh?word=poisson 14. Navsats. Modern-day Galileos (abbrev.). Europe is currently building a system of global positioning satellites called GALILEO, similar to the US NAVSTAR and Russian GLONASS GPS systems: http://www.csis.org/tech/satellites/0406galileo.pdf 16. Phase. NTSC color coder. The phase of an NTSC TV signal relative to the color burst determines the hue at the corresponding pixel: http://cnyack.homestead.com/files/modulation/ntsc_sig.htm 17. Taylor. These series are expansive. http://mathworld.wolfram.com/TaylorSeries.html 19. Dirac. At zero, this function can't be topped. The Dirac delta function has infinite value at zero, and zero value elsewhere: http://www.physicsdaily.com/physics/Dirac_delta_function http://mathworld.wolfram.com/DeltaFunction.html 21. EDO. Pre-S DRAM. "Extended data out" was the most common form of dynamic RAM used in personal computers before synchronous DRAM took over the market around the year 2000: http://computer.howstuffworks.com/ram4.htm 22. Radar. Bush directed its development. Vannevar Bush, during World War II: http://www.ieee.org/organizations/history_center/legacies/bush.html 23. Nyquist. He makes samplers work more than twice as hard. To perform an accurate digitization, the sampling frequency must exceed the Nyquist limit, which is twice the highest frequency in the signal to be sampled: http://www.ieee.org/organizations/history_center/legacies/nyquist.html http://en.wikipedia.org/wiki/Nyquist-Shannon_sampling_theorem Down1. DSL. Carries broadband service over twisted pair cable: http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci213915,00.html 2. Sonar. Sound waves propagate through matter, which is absent from a vacuum: http://www.science.uwaterloo.ca/earth/waton/radar.html http://www.marine-group.com/SonarPrimer/SideScanSonar.htm 3. Reactance. The AC component of impedance (resistance is the DC component): http://www.geocities.com/SiliconValley/2072/elecrri.htm http://searchsmb.techtarget.com/sDefinition/0,,sid44_gci212333,00.html 4. Chirp. Burst with a varying frequency, used in radar: http://cnx.rice.edu/content/m11718/latest/ http://www.bbc.co.uk/dna/h2g2/brunel/A591545 5. VBI (vertical blanking interval). Teletext is transmitted during this period of a TV signal: http://www.nationmaster.com/encyclopedia/Teletext http://www.heyrick.co.uk/software/ttx/ttxwhatis.html 6. Arsenic. In Group V of the periodic table of elements, an n-type or donor dopant for silicon: http://www.semiconductorglossary.com/default.asp?searchterm=arsenic%2C+As http://www.newmet.co.uk/Products/koch/arsenic.php 9. Resistor. Turns three oranges into 33,000 (resistor color code): http://www.elexp.com/t_resist.htm http://itll.colorado.edu/ITLL/index.cfm?fuseaction=ResistorChart 10. Binary. How to count with your thumbs. Use your other fingers as well to count to 1,023 on two hands: http://www.intuitor.com/counting/ http://howtoons.net/archives/final/800binary.html 11. Monopole. Violates Gauss's law of magnetism, which states that the net magnetic flux from a closed surface is zero: http://scienceworld.wolfram.com/physics/MagneticMonopole.html http://en.wikipedia.org/wiki/Magnetic_monopole http://hyperphysics.phy-astr.gsu.edu/hbase/electric/maxeq2.html 13. Flarion is a proponent of Flash-OFDM: http://www.flarion.com/products/flash_ofdm.asp 15. Viterbi. His algorithm votes "most likely" (a maximum likelihood decoding algorithm): http://en.wikipedia.org/wiki/Viterbi_algorithm 18. Work. Rectification in a Schottky diode occurs because of the different work functions on each side of a metal-semiconductor interface (as opposed to the different charge carrier densities on each side of a PN junction): http://eesof.tm.agilent.com/docs/iccap2002/MDLGBOOK/7DEVICE_MODELING/2DIODE/0History/W_Schottky.pdf 19. DEQ (differential equation). The heat transfer equation is a partial differential equation: http://www.nationmaster.com/encyclopedia/Partial-differential-equation 20. CRT (cathode-ray tube). Looking at this is so 20th-century: http://www.sharpsma.com/lcd/lcdguide/Technologies/LCD_CRT_Comparison.php (c) 2005 Kerry Hartman. Copying of this puzzle is permitted for noncommercial purposes, but only in its entirety including this notice and attribution to IEEE NCA Scanner. Please send meeting announcements, corrections and comments
6/2/05 |