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RF Cafe Engineering & Science Crossword Puzzle
June 30, 2019

Here is the last engineering- and science-themed crossword puzzle for June. These custom-made crosswords 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. 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 30, 2019 - RF Cafe

<click for full size to print>

1. Maximally flat group delay equation (2 wds.)

10. Type of current flow (abbr.)

11. __ + 16 Across, the world's best engineering website

12. Heatsink feature

13. Electrical safety organization (abbr.)

16. 11 Across + ____, the world's best engineering website

19. Semiconductor On Insulator (abbr.)

20. 1/000 of an amp (abbr.)

22. 1E6 nanoseconds

23. Moons of Jupiter

25. Stock symbol for Raytheon

26. Chemical symbol for neodymium

28. Filter type that blocks frequencies below and above a specified band (abbr.)

30. Special diode type that can be switched (abbr.)

32. An ellipse has two of them

33. Describes the movement of a spacecraft in space when there is no thrust from the engines

36. Chemical symbol for lead

39. Chemical symbol for arsenic

40. Boob tube (abbr.)

41. Minutes of Use (abbr.)

43. End of transmission (abbr.)

46. CDMA Development Group (abbr.)

48. Chemical symbol for neon

50. Elements of a scattering matrix

54. 1.602E-19 Joules

55. Temperature-compensated crystal oscillator (abbr.)

56. 10E-12 numerical prefix

57. Chemical symbol for cobalt

58. Engineer who experimented with extremely high voltages (2 wds.)

62. Chemical symbol for aluminum

63. Popular computer device interface (abbr.)

65. 36 in. (abbr., pl.)

66. Substrate for mounting components (abbr.)

68. Chemical symbol for rhodium

70. Test equipment (abbr.)

73. Chemical symbol for einsteinium

74. Bends electromagnetic energy

75. One factor of a polynomial

76. Current-voltage phase mnemonic

78. Chemical symbol for polonium

80. Unit of liquid measure (abbr.)

81. Type of logic gate

83. CRT, LCD, etc.

84. Chemical symbol for silver

86. Semiconductor and calculator company (abbr.)

87. Unit of liquid measure (abbr., pl.)

88. Temperature-compensated crystal oscillator

89. Max or min voltage of a waveform (abbr.)

91. Official Space Shuttle designation (abbr.)

94. Chemical symbol for helium

95. Chemical symbol for tantalum

97. Most distant point one can see by line-of-sight (2 wds.)

1. Stock symbol for Boeing

2. ECM response

3. The second-lowest region of the ionosphere found approximately 60 to 70 miles above Earth (1 ltr. + 1 wd, hyph.)

4. 30 kHz to 300 kHz

5. Unit of capacitance (abbr.)

6. Chemical symbol for nickel

7. Cyanide (abbr.)

8. Its chemical symbol is Fe

9. Greek letter used for frequency

14. Stock symbol for Lockheed Martin

15. Type of source used by a Norton equivalent circuit

17. MS's server-side script engine for dynamically-generated web pages (abbr.)

18. Very Long Baseline Interferometry (abbr.)

19. File menu option (pl.)

21. Instrument for measuring potential difference using a taut band indicator (2 wds.)

24. Internet protocol (abbr.)

27. Type of current

29. Fast Fourier transform (abbr.)

31. Angular speed unit

34. Chemical symbol for radium

35. A feedback scheme to level out the receiver audio volume (abbr.)

37. An elementary particle

38. Type of memory

42. One type of electron spin

43. Effect (named after its discoverer) that is the variation in the width of the base in a BJT due to a variation in the applied base-to-collector

44. Determines proper functionality

45. Filter type that blocks frequencies in a specified band (abbr.)

47. 10E1 numerical prefix

49. Official engineering change document (abbr., pl.)

51. A type of digital modulation (abbr.)

52. Electrical overstress (abbr.)

53. Satellite milieu

59. Network department (abbr.)

60. Type of data conversion device (abbr.)

61. Filter type that blocks upper frequencies (abbr.)

64. Notch type filter (abbr.)

67. Broadband Signal Intrusion (abbr.)

69. Stock symbol for Harris Communications

70. Temperature-compensated crystal oscillator (abbr., pl.)

71. Radio signals from the cosmos (abbr.)

72. Rocket first stage

75. One factor of a polynomial

77. "Calling any amateur radio station"

78. Chemical symbol for platinum

79. Ham abbreviation indicating contacts with all major land masses

82. Output intercept point (abbr.)

83. Microwave Theory and Techniques Society (abbr.)

85. BASIC program command

90. Kilovolts (abbr.)

91. Chemical symbol for antimony

92. Chemical symbol for thallium

93. Chemical symbol for selenium

94. Chemical symbol for holmium

96. Army-Navy specification prefix

See solution below


2019 Crossword Puzzle 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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A cruciverbalist is a person who is skilled at creating or solving crossword puzzles. The term is a combination of "cruci-" from "crucifix," meaning cross, and "verbalist" from "verbal," indicating a person who deals with words. cruciverbalists are often responsible for designing crossword puzzles, and they possess a deep knowledge of wordplay, vocabulary, and the techniques used in constructing and solving crosswords. They aim to make puzzles that are both challenging and enjoyable for crossword enthusiasts.

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