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RF Cafe Engineering & Science Crossword Puzzle
June 23, 2019

Since 2000, I have been creating custom engineering- and science-themed crossword puzzles 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. You will never find a word taxing your knowledge of a numbnut soap opera star or the name of some obscure village in the Andes mountains. You might, however, encounter the name of a movie star like Hedy Lamarr or a geographical location like Tunguska, Russia, for reasons which, if you don't already know, might surprise you.

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 June 23, 2019 - RF Cafe

<click for full size to print>

1. Ceramic Dual Inline Package
4. Any mathematical statement that declares the values of two mathematical expressions to be equal
8. Type of data conversion device (abbr.)
10. Radio frequency interference (abbr.)
11. Type of graph with a circular grid
13. Discipline for aircraft navigation in low visibility environments (abbr.)
15. RF ____, the world's best engineering website
17. This is a subatomic particle having a mass between that of an electron and a proton
18. A BPF specification (abbr.)
19. Constellation : The southern cross
21. Chemical symbol for copper
22. BS__ - the degree held by many RF Cafe visitors
23. Numerical prefix for 10E2
25. Early programming language
27. PC follower
28. Rotate about the vertical axis
29. "Peace Prize" endowment creator, who made his fortune on the discovery of dynamite
32. Unit of time (abbr.)
33. Unit of liquid measure (abbr.)
34. A common battery cell size
35. Sends a file over a network (abbr.)
37. The constellation in which Canopus is located
38. European equivalent to the U.L.
40. Chemical symbol for erbium
41. Ratio of circumference to diameter
42. English scientist who first performed the famous double slit experiment and also played a major role in deciphering the Rosetta Stone
43. Type of chart
44. Chemical symbol for beryllium
45. Negatively charged ion
47. Traditional term for a person who enjoys helping newcomers get started in ham radio - a mentor
49. Type of current
50. Chemical symbol for ruthenium
51. Compliment to a pole in a transfer function
53. Chemical symbol for berkelium
54. Just entering the nonlinear region
56. Length times width
59. Automatic Calibration System (abbr.)
61. Indium Gallium Phosphor semiconductor (abbr.)
62. Radio Direction Finding (abbr.)
64. Virtual Private Network
66. ________ Time, how long a stepped signal takes to go from 10% to 90% of its full-scale value
67. Creates a code version of a semiconductor device
1. Complex Instruction Set Computer
2. Impurity in a semiconductor
3. Chemical symbol for palladium
4. Official engineering change document (abbr., pl.)
5. Seventh planet from the sun
6. Coefficient of temperature (abbr.)
7. Switch position
9. Highest point
10. Part of this website's title
12. On a waveform, a _____ min or max
13. Current-voltage phase mnemonic
14. Electronic device that permits current flow in only one direction
16. Length times width (pl.)
17. Greek letter (micro)
18. Method of self-detection and self-fixing transmission of digital data (abbr.)
20. Unit of electromagnetic radiation
23. Name of the curve formed by the intersection of a cone with a plane at a smaller angle with its axis than the side of the cone
24. Pure carrier (abbr.)
25. Radio navigation reference signal
26. Number that has no fractional part
30. Stock symbol for Boeing
31. Chemical symbol for cesium
33. Type of matrix barcode used with laser scanning(abbr.)
36. Chemical symbol for praseodymium
37. Analog-to-Digital (abbr.)
39. Chemical symbol for europium
41. _____-wise linear
42. The scientist who first performed the "double slit" experiment
43. Related to FM by a differential
45. Abbreviation for acknowledge (also a common word used by Bill the Cat)
46. Type Mylar airframe structure covering (2 words)
48. Added a termination
49. Logarithmic unit of ratio (abbr., pl.)
51. Antenna type derived from simple weighted wires dropped from Zeppelin airships
52. Radio signals from the cosmos (abbr.)
55. File menu option
57. Microwaves & __ magazine
58. Automatic Packet Position Reporting System (abbr.)
60. Software engineering tool (abbr.)
63. Filter type that blocks frequencies below and above a specified band (abbr.)
65. Home state of Los Alamos lab (abbr.)

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.

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