Electronics World articles Popular Electronics articles QST articles Radio & TV News articles Radio-Craft articles Radio-Electronics articles Short Wave Craft articles Wireless World articles Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors LinkedIn Crosswords Engineering Humor Kirt's Cogitations RF Engineering Quizzes Notable Quotes Calculators Education Engineering Magazine Articles Engineering software RF Cafe Archives Magazine Sponsor RF Cafe Sponsor Links Saturday Evening Post NEETS EW Radar Handbook Microwave Museum About RF Cafe Aegis Power Systems Alliance Test Equipment Centric RF Empower RF ISOTEC Reactel RF Connector Technology San Francisco Circuits Anritsu Amplifier Solutions Anatech Electronics Axiom Test Equipment Conduct RF Copper Mountain Technologies Exodus Advanced Communications Innovative Power Products KR Filters LadyBug Technologies Rigol TotalTemp Technologies Werbel Microwave Windfreak Technologies Wireless Telecom Group Withwave RF Cafe Software Resources Vintage Magazines RF Cafe Software WhoIs entry for RF Cafe.com Thank you for visiting RF Cafe!
Anatech Electronics RF Microwave Filters - RF Cafe

LadyBug RF Power Sensors

ConductRF Phased Matched RF Cables - RF Cafe

Please Support RF Cafe by purchasing my  ridiculously low-priced products, all of which I created.

RF Cascade Workbook for Excel

RF & Electronics Symbols for Visio

RF & Electronics Symbols for Office

RF & Electronics Stencils for Visio

RF Workbench

T-Shirts, Mugs, Cups, Ball Caps, Mouse Pads

These Are Available for Free

Espresso Engineering Workbook™

Smith Chart™ for Excel

Anritsu Test Equipment - RF Cafe

Melanie and Pi (π)
- RF Cafe Cool Pic -

Cool Pic Archive Pages

| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 |

These images have been chosen for their uniqueness. Subject matter ranges from historic events, to really cool phenomena in science and engineering, to relevant place, to ingenious contraptions, to interesting products (which now has its own dedicated Featured Product category).

Alas, poor Melanie has been around me for too long. We got a new cat from the Humane Society shelter on Saturday. I mentioned that a science type name would be cool. After tossing around a name for her, Melanie came up with Pi (π). Why Pi? Saturday was March 14, aka Pi Day (3.14).

We had planned to pick her up at 1:59 in the afternoon, but missed it by a few minutes - that would have made the cat ours at 3.14159. That is fitting, I suppose, since she is not a pure breed feline - just an approximation, like maybe Ptolemy's value:

Pi - Ptolemey's value

Note the numerator there: 377. That is the number we use often in RF propagation to represent the impedance of free space, which is created on our electronic calculators by the operation 120 * π ... So 120π/120 = π . Sure, it is not a real identity, just an interesting coincidence. (see my Pi page)

 

Melanie with Our Cat, Pi  (π) - RF Cafe

Melanie and Pi (π)

If you will send me an e-mail if you have a pet with a name from science and include a photo, I will post it here.

RF Cafe: Brad E.'s Jack Russel Terrier puppy

Says Brad: Congrats on your new family addition (Pi). It takes people with warm hearts to help those that cannot help themselves. I know you will enjoy the constant company of Pi. There is always something different about a new friend saved from a humane shelter. They always seen more loving than store purchased pets. I recently save another myself after losing my two cats (Jack & Missy) after 15 years. I have always wanted a Jack Russell terrier and after the loss of my cats I decided I would go to shelters and see if I could find a Jack Russell puppy. Well I found a whole litter in MA. I picked out the runt little female and she is great ! Enjoy you new friend. - Brad E.

RF Cafe: Scamp - Don Hicks' Dog Seal

Says Don: This is Scamp. Named after a Navy sonar system of course. He is also a member of the U.S. Navy Seals. We had to disguise him for security reasons... and don't worry about the dog. He can "undress" himself in about 3 seconds when he gets ready. For some reason, he likes to stick his head inside that cap when you hold it open in front of him. - Don Hicks

RF Cafe - Daveid  D's "Cutie Pi" best friend

RF Cafe visitor Daveid D. sent this photo of his "Pi," or "Cutie Pi" as she is affectionately known. Daveid's Pi was so-named because of the near perfect circle on her back, plus, if you look at the back of her head, there is a π shape formed by the brown fur.

Anritsu Test Equipment - RF Cafe
RF Cascade Workbook 2018 by RF Cafe

Cafe Press

Windfreak Technologies Frequency Synthesizers - RF Cafe