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Science Terms Crossword Puzzle
November 14, 2021

This technically themed crossword puzzle for November 14th contains only clues and words are directly to RF, microwave, and mm-wave engineering, optics, mathematics, chemistry, physics, and other science subjects. 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., Reginald Denny or the Tunguska event in Siberia). 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

Science Terms Crossword Puzzle for November 14th, 2021 - RF Cafe

1. Region of the ionosphere approximately 90 to 400 miles above Earth - responsible for most long distance propagation below 30 MHz (hyph.)
5. Move in a raster pattern
9. Send Morse Code
10. Infrared (abbr.)
11. Large loudspeaker designed primarily to reproduce low frequency audio signals
13. Chemical symbol for tin
14. Slang for transmitter and/or receiver
15. Inductors
16. BS__ - the degree held by many RF Cafe visitors
18. Prefix meaning ground or earth
19. Local Oscillator (abbr.)
20. Chemical symbol for berkelium
21. Chemical symbol for arsenic
22. One component of a complex number (abbr.)
23. Input winding of a transformer
26. Electronics components & batteries supplier based in Japan
29. Chemical symbol for silicon
30. Semiconductor device that varies its transconductance according to light intensity
33. Chemical symbol for selenium
34. Broadband Signal Intrusion (abbr.)
36. Antenna test chamber
40. Official Space Shuttle designation (abbr.)
42. Method of self-detection and self-fixing transmission of digital data (abbr.)
43. Its chemical symbol is Lu
45. ___/IP scheme for networked connectivity
47. Opposite of I.D.
50. Entity created by virtue of a changing electric current (2 wds.)
53. Chemical symbol for nickel
55. The system than converts common website names to IP addresses (abbr.)
56. Extract information from a modulated signal
58. Centimeter (abbr.)
59. Internet protocol (abbr.)
60. European equivalent to the U.L.
61. Unit of capacitance (abbr.)
62. Cause a voltage or current waveform to gradually die out
63. Chemical symbol for gold
64. Susan _____, "Microwave Journal" magazine editor (c2014)
67. Video Graphics Array (abbr.)
68. Unix, Linux or Windows (abbr.)
69. PCB interconnects
71. Semiconductor and calculator company (abbr.)
72. 36 in. (abbr., pl.)
74. Universal Mobile Telecommunications System (abbr.)
75. Mr. Pascal's first name
 1. Chemical symbol for iron
2. Constellation : The lyre
3. Compound used as the frequency determining element in microwave oscillators
4. Chemical symbol for erbium
5. Semiconductor On Insulator (abbr.)
6. _____ Instruments, a programmable delay line manufacturer in Bellevue, WA
7. Audio Frequency Shift Keying (abbr.)
8. Chemical symbol for neon
9. Sharp bend in I-V curve
11. Write-Once (abbr.)
12. Performs a disk operation
13. ESD protective apparel
15. Heavenly body having a tail
17. Sporadic E-layer ionospheric propagation (hyph.)
19. Chemical symbol for lithium
24. Method of transmitting meteorological instrument readings from a weather balloon
25. Mate to a plug
27. National Television System Committee (abbr.)
28. Wireless transmitting device that opens a car door remotely
31. Chemical symbol for einsteinium
32. Receiver power level circuitry (abbr.)
35. International Telecommunications Union
36. Sound frequency in the human hearing range (abbr.)
37. On-the-air meeting of hams at a set time, day and radio frequency
38. ECM response
39. Chemical symbol for chlorine
41. Type of component package (abbr.)
44. Einstein's paradoxical traveler
46. Attenuator
48. Morse Code for "from"
49. International phonetic alphabet letter "I"
51. Shorthand for troposphere
52. Does a total memory transfer
54. Opposite of output
56. Have a chemically induced efffect
57. 300 Hz to 3 kHz in audio (abbr.)
58. Logic family
60. Study for a test just before taking it
62. Sets of 24-hour periods
65. Akin to EEs, CEs, AEs, etc. (abbr., pl.)
66. Filter type that blocks frequencies in a specified band (abbr.)
67. Circuit element connecting PCB layers
70. Chemical symbol for ruthenium
71. Chemical symbol for thallium
73. Morse Code for "from" 

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

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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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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Science Terms Crossword Solution for November 14th, 2021 - RF Cafe

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