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RF Cafe Engineering & Science Crossword Puzzle
July 21, 2019

Unlike all of the other engineering and science-themed crossword puzzles I have ever seen, every word and clue - without exception - in these RF Cafe puzzles has been personally entered into a very large database of relevant terms. The list has been built over nearly two decades of creating these crossword puzzles. Let me know if you would like a custom crossword puzzle built for your company, school, club, etc. (no charge). These custom-made engineering and science-themed crossword puzzles are done weekly for the brain-exercising benefit and pleasure of RF Cafe visitors who are fellow cruciverbalists. The jury is out on whether or not this type of mental challenge helps keep your gray matter from atrophying in old age, but it certainly helps maintain your vocabulary and cognitive skills at all ages. A database of thousands of words has been built up over the years and contains only clues and terms associated with engineering, science, physical, astronomy, mathematics, chemistry, etc.

cruciverbalist: [noun]  cruci- ("cross") +‎ verbal ("words") +‎ -ist ("agent, person") -- A person who constructs or works crosswords.


Reproduction of this puzzle without the express permission of RF Cafe is prohibited.
acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

Engineering & Science Crossword Puzzle July 21, 2019 - RF Cafe 

1. The "F" in CFL bulbs
2. One component of a complex number (abbr.)
3. Exactly the same in mathematics
4. Switch position
5. Chemical symbol for tantalum
6. Stock symbol for Linear Technologies
9. Early instrument for measuring the positions of the heavenly bodies
11. Unit of time (abbr.)
15. Chemical symbol for mercury
16. Logarithmic reflectivity unit
17. Stock symbol for Boeing
19. Type of logic gate (pl.)
20. 1,000 seconds (abbr.)
22. Test point (abbr.)
24. 10E1 numerical prefix
26. A common battery cell size
27. ELI the ICE ___
28. Using air pressure as power
29. Type of data conversion device (abbr., pl.)
32. JavaScript (abbr.)
34. Chemical symbol for selenium
36. PhD
38. Chemical symbol for antimony
40. Unit of weight
43. Greek letter
45. Time delay (abbr.)
46. Science of assuring operation amid dense EM background noise (abbr.)
48. What is the measure of heat intensity called
49. An area of poor radio communication, too distant for ground wave and too close for sky waves (2 wds., pl.)
50. Weight (abbr.)
51. European Telecommunications Standards Institute (abbr.)
53. Chemical symbol for arsenic
55. Unit of capacitance (abbr.)
57. Deutsche Industrie Normenausschuss
62. Read-only (abbr.)
63. Chemical symbol for palladium
64. A common battery cell size
65. Type of current
67. Chemical symbol for erbium
68. Modulation technique (abbr.)
72. Small unit of capacitance (abbr.)
73. Crystal face
74. Chemical symbol for europium
75. Length times width
78. Chemical symbol for lawrencium
82. Greek letter (micro)
83. Chemical symbol for gold
85. Chemical symbol for europium 

ACROSS
1. Slang for an electronic 86 Across (2 wds.)
7. Equalizer (abbr.)
8. 1e-6 mA
10. One type of electron spin
12. Unit of time (abbr.)
13. Units of heat
14. Workplace safety group (abbr.)
16. Logarithmic ratio (abbr.)
18. The "G" in GPS
20. Chemical symbol for krypton
21. Radio signals from the cosmos (abbr.)
23. Return-to-Zero (abbr.)
24. Digital storage oscilloscope (abbr.)
25. Send junk e-mail
28. BlackBerry or Palm for example (abbr.)
30. A common battery cell size
31. Rádio Nacional de Angola (abbr.)
32. Intel x86 command for " jump if above"
33. Chemical symbol for einsteinium
35. Chemical symbol for neodymium
37. Exalted-Carrier Single Sideband (abbr.)
39. On-the-air meeting of hams at a set time, day and radio frequency
41. Popular computer device interface (abbr.)
42. Optical cross-connect (abbr.)
44. Type of aircraft dope
47. Time Division Multiplexing
50. BER, 8 bits at a time
52. Software engineering tool (abbr.)
54. Runge-_____ method in differential equations
56. Chemical symbol for cadmium
58. Type of component package (abbr.)
59. Band between RF and BB
60. Official Space Shuttle designation (abbr.)
61. Infrared (abbr.)
63. Type of chart
64. Positive electrode
66. One system's phonetic letter "z"
68. Last stage in a transmitter (abbr.)
69. Chemical symbol for chromium
70. Type of logic gate
71. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)
76. Type of modulation (abbr.)
77. Automated universal inductance tester - watch that 3rd letter, (abbr.)
79. Antenna radiated power measurement (abbr.)
80. Chemical symbol for scandium
81. Chemical symbol for ruthenium
82. 1/000 of an amp (abbr.)
84. BS__ - the degree held by many RF Cafe visitors
86. The Brits call it a valve (2 wds.) 

See solution below

 

2019 Crosswords Archive

Visit the Crossword Express website - RF CafeTake 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.

2019 | 2018 | 2017 | 2016 | 2015 | 2014 | 2013 | 2012 | Sudoku

September 29

September 22

September 15

September 8

September 1

August 25

August 18

August 11

August 4

July 28

July 21

July 14

July 7

June 30

June 23

June 16

June 9

June 2

May 26

May 19

May 12

May 5

April 28

April 21

April 14

April 7

March 31

March 24

March 17

March 10

March 3

February 24

February 17

February 10

February 3

January 27

January 20

January 13

January 6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Engineering & Science Crossword Solution July 21, 2019 - RF Cafe

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