Engineering & Science Crossword Puzzle October 23, 2011
2011 Engineering & Science Crossword Puzzles
Take a well-deserved break and try your hand at some of these goodies.
Every word in the RF Cafe crossword puzzles is specifically related to engineering,
mathematics, and science. There are no generic backfill words like many other puzzles
give you, so you'll never see a clue asking for the name of a movie star or a mountain
on the Russia-China border.
All of these crossword puzzles were created using the fabulous
Crossword Express (now called "Magnum Opus") software.
Reproduction
of this puzzle without the express permission of RF Cafe is prohibited.
ACROSS
DOWN
1. Ham's code for "Are you busy?"
4. Effect which causes a voltage between the faces of a crystal
under mechanical pressure 14. Volt, meter, pint, pound, eg.
16. Filter type that blocks frequencies in a specified band
(abbr.) 17. Network device that takes commands from another
similar device 18. Signal-to-noise ratio (abbr.) 19. A
common battery cell size 20. A "1" or a "0" 22. Coefficient
of temperature (abbr.) 23. "Calling any amateur radio station"
25. Specialized mobile radio (abbr.) 26. Personal Digital
Cellular 27. Part of this website's title 29. Unit of
inductance (abbr.) 31. Antenna radiated power measurement
(abbr.) 34. User Datagram Protocol 36. Adds or removes
charged particles such as electrons from an atom or molecule
37. Measure of density of material with air pockets 38. Chemical
symbol for lawrencium 40. Chemical symbol for molybdenum
41. Device that allows repeater users to make telephone calls
through a repeater 43. 1E6 bits per second 45. 10 decibels
48. Chemical symbol for thulium 49. Aircraft navigation systems
52. Chemical symbol for mendelevium 53. Tweaked a filter
for the correct response 55. Inventor of the pre-quantum
atomic model 57. Web page language 59. Computer Assisted
Design and Development 60. Chemical symbol for radon 61.
Indium phosphide 62. The largest asteroid 63. Semiconductor
On Insulator (abbr.) 64. Chemical symbol for nickel 65.
High frequency semiconductor (abbr.) 67. Set of poles
68. Wireless phone region 69. Terminations 71. Chemical
symbol for europium 72. Radio signal route 74. Akin to
an EE, CE, AE, etc. 75. The system than converts common website
names to IP addresses (abbr.) 76. Most protruding part of
planetary rings as seen from distance 78. This is any flow
which occurs from an area of high concentration to an area of
low concentration 80. Chemical symbol for silicon 82.
Test equipment (abbr.) 83. Emits electromagnetic energy
85. The "C" in SCADA 87. Multiplexer (abbr.) 88. Swap
____, a Ham's flea market 90. Weight (abbr.) 91. One component
of a complex number (abbr.) 92. "Texting" (abbr.) 93.
Powers pneumatic devices 95. Chemical symbol for cadmium
97. BS__ - the degree held by many RF Cafe visitors 98. Stock
symbol for Lockheed Martin 99. Chemical symbol for neon
100. A common RS-232 serial bus command (abbr.) 102. The
"U" in UHF 106. Chemical symbol for einsteinium 107. Its
chemical symbol is Fe 109. Test equipment that provides a
time-domain signal display (pl.) 110. Antenna (abbr.)
1. Geometrical term for any
four sided figure 2. Rádio Nacional de Angola (abbr.)
3. Chemical symbol for lithium 4. A number divisible only
by itself and 1 5. Chemical symbol for erbium 6. Unix,
Linux or Windows (abbr.) 7. 3-D geometrical figure that is
symmetrical about each of three perpendicular axes, and has
circular sections along one axis and elliptical sections along
the others 8. Chemical symbol for lanthanum 9. Mathematical
curve that is the locus of the centres of curvature of another
curve 10. European equivalent to the U.L. 11. Type of
flip-flop 12. Stock symbol for Intel 13. Error checking
scheme (abbr.) 15. Temporary Engineering Change document
(abbr.) 16. Early predecessor to an online forum (abbr.)
21. Cause a circuit breaker to open 24. Ham's code for "Zero
beat your signal with mine." 26. Min-to-max voltage of a
waveform (abbr.) 28. Online venue for posting comments &
reading replies 30. 6-sided polygons 32. Type of memory
33. Type of data storage IC (abbr.) 35. Chemical symbol for
dysprosium 39. An abbreviation for "transceiver" 42. Chemical
symbol for holmium 44. Graphics file types 45. Manufacturer
of project boxes 46. Last statement in a BASIC program
47. Front edge of a wing (abbr.) 50. Moon of Saturn discovered
in 1672 51. Remove insulation from a wire 53. Loose end
of a cable 54. Antenna structure that connects directly to
the feed line (2 wds.) 55. Steady-state voltage reference
56. Test equipment manufacturer, now Agilent (abbr.) 58.
Prefix meaning ground or earth 59. Adverse property of Teflon
62. The "brains" of parallel processing computers 63. Chemical
symbol for selenium 65. Gallium nitride chemical symbol
66. Agilent's EE design software (abbr.) 68. IC 70. Opposite
of I.D. 71. Circuit or mechanical designer with a Bachelor's
or higher degree (pl.) 73. Time delay (abbr.) 74. Converts
electrical energy into mechanical energy 77. Material testing
organization (abbr.) 79. Name the Scottish physicist who
developed the theory of electromagnetism 81. U.K. equivalent
of the IEEE 83. Chemical symbol for ruthenium 84. Impenetrable
physical barrier 86. Negative temperature coefficient (abbr.)
87. 1E6 nanoseconds 89. EE _____, premier electronics magazine
92. Adjusts a pot 94. A common RS-232 serial bus command
(abbr.) 96. Printer resolution abbreviation 97. Engineering
Change Order (abbr.) 99. Negation prefix 101. Chemical
symbol for scandium 102. Electrical safety organization (abbr.)
103. Part of a FOR loop 104. Type of current flow (abbr.)
105. Filter type that blocks upper frequencies (abbr.) 108.
Chemical symbol for radium
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