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Kirt Blattenberger - RF Cafe Webmaster

Copyright: 1996 - 2024
    Kirt Blattenberger,


RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The World Wide Web (Internet) was largely an unknown entity at the time and bandwidth was a scarce commodity. Dial-up modems blazed along at 14.4 kbps while typing up your telephone line, and a nice lady's voice announced "You've Got Mail" when a new message arrived...

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Physics & Science Theme Crossword Puzzle
February 14th, 2021

This Physics & Science Theme crossword puzzle for Valentine's Day 2021 contains only words and clues related to engineering, mathematics, chemistry, physics, and other technical words. As always, this crossword contains no names of politicians, mountain ranges, exotic foods or plants, movie stars, or anything of the sort unless it/he/she is related to this puzzle's technology theme (e.g., Hedy Lamarr or the Bikini Atoll). The technically inclined cruciverbalists amongst us will appreciate the effort. Enjoy!

Reproduction of this puzzle without the express permission of RF Cafe is prohibited.

acr. = acronym, abbr. = abbreviation, pl. = plural, wds. = words

Physics & Science Theme Crossword Puzzle for February 14th, 2021 - RF Cafe

1. Its chemical symbol is Ru
5. Quantity of heat equal to 100,000 BTU
9. Chemical symbol for aluminum
10. Satellite EHF Communications for Mobile Multimedia
13. Web's most popular radio frequency engineering site (2 ltrs. + 1 wd.)
17. Chemical symbol for scandium
18. No insulation
19. Wireless phone region
22. Semiconductor and calculator company (abbr.)
23. Chemical symbol for nickel
25. A common battery cell size
26. Chemical symbol for thallium
27. Schema for computer or device presentation to the operator (abbr.)
28. BS__ - the degree held by many RF Cafe visitors
29. Global System for Mobile Communications (abbr.)
30. Type of e-mail address system (abbr.)
32. Army-Navy specification prefix
33. Used logic gates
34. One of the Ws in WWW
36. Chemical symbol for antimony
37. High electron mobility transistor
38. _____ Microwave East (part of L3-Com), RF component manufacturer located in Hauppauge, NY
40. PC follower
41. Minutes of Use (abbr.)
42. Chemical symbol for nickel
43. The "E" in BER
45. 30 MHz to 300 MHz
46. Digital intelligence
48. ECM response
49. Type of logic gate
50. Radio-Electronics-Television Manufacturer's Association
52. Test equipment (abbr.)
53. Flash caused by an electric current ionizing a gas or vapor
54. Type of current flow (abbr.)
55. Attenuator topology (pl.)
58. Co-channel rejection ratio (abbr.)
60. Chemical symbol for helium
61. End of Life (abbr.)
62. 10E-12 numerical prefix
64. Chemical symbol for argon
65. Silicon transistor type
67. Wireless application protocol (abbr.)
68. Part of a FOR loop
69. Type of logic gate
71. Schema for computer or device presentation to the operator (abbr.)
72. Intermodulation (abbr.)
74. Chemical symbol for molybdenum
75. Network department (abbr.)
76. Moon of Saturn discovered in 1672
77. Units of heat
79. Unix, Linux or Windows (abbr.)
80. Computer display unit (pl.)
81. Overall functional unit
86. Read-only (abbr.)
87. International phonetic alphabet letter "I"
88. Calendar that followed the Julian calendar
1. Term used to denote transmission of sound, video, data, etc. (2 wds.)
2. Electrical safety organization (abbr.)
3. Radiation which has wavelengths longer than that of red light
4. 1E6 nanoseconds
5. Coefficient of temperature (abbr.)
6. Chemical symbol for holmium
7. Electromagnetic (abbr.)
8. Type of flip-flop
11. Project box
12. Numbers entered as a number from one to ten multiplied by a power of ten (2 wds.)
13. _____-Kutta method in differential equations
14. Unlicensed FCC Part 95 realm for personal and business radio use (abbr.)
15. A common battery cell size
16. BS__ - the degree held by many RF Cafe visitors
17. The gaseous state of water
20. Chemical symbol for lutetium
21. Electromagnetic radiation in the visible spectrum
24. Integrated Services Digital Network (abbr.)
26. Test point (abbr.)
31. Chemical symbol for lead
34. Transfer data to a disk
35. The UK's largest defense electronics contractor (abbr.)
39. Association of North American Radio Clubs
40. Emitted a flash during electrical discharge
44. Number system which uses only the digits 0 to 7
47. Cause to decrease in magnitude
51. Automated Test Equipment (abbr.)
54. Strong cable covering
56. Describes a charge with a deficiency of electrons
57. Junk e-mail
59. Type of vector product
60. Filter type that blocks lower frequencies (abbr.)
63. Apple's popular media playing device (pl.)
66. Ratio of circumference to diameter
70. Chemical symbol for rhodium
73. Multiplexer (abbr.)
77. Filter type that blocks frequencies below and above a specified band (abbr.)
78. Chemical symbol for selenium
81. Chemical symbol for tin
82. Yard (abbr.)
83. Chemical symbol for silicon
84. Chemical symbol for tantalum
85. Chemical symbol for magnesium
86. Chemical symbol for radium

See solution below


2021 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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Physics & Science Theme Crossword Puzzle Solution for February 14th, 2021 - RF Cafe

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