Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Manufacturers & Services Consultants Engineer Jobs Twitter LinkedIn Advertise on RF Cafe! Engineering Books Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar Day in History RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Bookstore Calculators Education Engineering Organizations Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings Advertisers Websites RF Cafe Archives Test Notes Slide Rules RF Cascade Workbook RF Stencils for Visio Shapes for Word Thank you for visiting RF Cafe!

RF Cafe Software

RF Cascade Worbook
 RF Cascade Workbook 2005 - RF Cafe
Calculator Workbook
RF Workbench
Smith Chart™ for Visio
Smith Chart™ for Excel
RF & EE Symbols Word
RF Stencils for Visio

Your RF Cafe
Progenitor & Webmaster

Click here to read about RF CafeKirt Blattenberger
BSEE
KB3UON
EIEIO

Carpe Diem!
(Seize the Day!)

5th MOB:
My USAF radar shop

Airplanes and Rockets:
My personal hobby website

Equine Kingdom:
My daughter Sally's horse riding website

Cool Pic Archive #12

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).

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 |

Breadboard for measuring nanoamperes in a watch crystal.Good, old-fashioned lab bench work - a breadboard for measuring nanoamps in a watch crystal. Linear Technology photo.
12-7-2007


Bell Labs campus, Holmdel, NJCrop Circles? Nein. This is an aerial view of the former Bell Labs, on 472 acres in Holmdel, NJ. It is slated for destruction.
11-13-2007


Space Chips - CornellMason Peck of Cornell U. is working on a plan to send many thousands of microchip spacecraft throughout the solar system using the Earth's Lorentz to propel the devices on their way to their targets. Check back in 2030 for progress.
10-18-2007


World's tiniest artwork - nanoscale etching of Robert Fludd's "the sun" - by IBMIBM scientists showed a new nano printing technique they developed. The recreation of Robert Fludd's 17th century drawing of the Sun (the alchemists' symbol for gold) was created by precisely placing 20,000 gold particles, each about 60 nanometers in diameter.
9-18-2007

Earth-Rise circa 2007, taken by Japan's Kaguya spacecraftEarth-Rise circa 2007, taken by Japan's Kaguya spacecraft - reminiscent of the famous Apollo 8 Earthrise photo from 1968. Very cool.
12-12-2007


A rocket trailing a thin, grounded copper wire was launched into a thundercloud, triggering a series of lightning bolts that followed the path of the wire. Wind has separated the individual bolts.
11-27-2007


2008 Olympic Stadium frameHere is the very unique open framework of the National Stadium in Beijing, designed by Swiss architectural firm Herzog & de Meuron's.
10-31-2007


RF Cafe appearing in October 2000 edition of Microwaves & RF magazineHere is a scan of RF Cafe's first appearance in Microwaves & RF magazine, in the October 2000 edition. Alan "Pete" Conrad, their Special Projects Editor, who had a few years earlier done me a huge favor by promoting my TxRx Designer software (now RF Workbench), did the review. Thanks to Pete for being a good guy.
10-1-2007

December 23, 2007  full moon - Mars conjunction, photo by Kirt BlattenbergerThis photo of the full moon - Mars conjunction (≈3/8°), taken December 23, 2007, captures the northernmost (highest in the sky) full moon of the year. Earth will pass between Mars and the sun tomorrow. Mars will not come this close to Earth again until the year 2010.
12-26-2007


Extreme tin whiskersThis has to be the worst case of tin whiskers I have ever seen. This is a 1960s era, tin-coated switch assembly.
10-25-2007


HP's CRT recycling centerPhoto #2 on HP's CRT recycling center website. "Items collected by HP, like these cathode ray tubes from monitors, are sent directly to a smelter because they contain mercury bulbs, which are considered hazardous to the environment." Mercury in CRTs? Not. From the EPA site: "The mercury emitted from the generation of power consumed by the CRT during manufacturing and use (7.75 mg), is slightly greater than the entire amount of mercury emissions from the LCD..."
9-24-2007


Britain's Colossus codebreaking computerA rebuilt version of Britain's famous  Colossus codecracking computer (entered service in 1944) was recently pitted against an amateur cryptographer from Bonn. The German gentleman beat Colossus' time of three hours and 35 minutes for deciphering a message which was originally sent in 1938 using Nazi code.
11-19-2007

CREE outdoor lighting before and after white LEDs
CREE's outdoor lighting before and after installing white LED arrays in the parking lot fixtures. This is good for visibility, but bad for astronomers who cannot filter discrete spectral lines like those of gaseous light sources.
1-3-2008


Click to view my Comet Holmes photoComet Holmes is a rare naked-eye visible comet. It is easily seen as what looks like an extra star in Perseus. Binoculars reveal it to be a big smudge - not a star. See my photo.
11-8-2007


Rohde & Schwarz's Technology Center in MunichThis is the atrium area of Rohde & Schwarz's new (2005) Technology Center, in Munich, Germany - must be a nice place to work. The building is heated and cooled using a complex underground water system. Still, all that glass area must be very inefficient compared to insulated walls.
10-8-2007


LED replacement fluorescent bulbs - EverLED TR - Popular Science
These EverLED TR bulbs are drop-in replacements for 4-foot fluorescent bulbs. They feature an array of LEDs and circuitry to convert the normal high supply voltage into regulated DC. EverLED claims a 20% reduction in energy usage, a 10-year life, works in cold environments, does not flicker, is instant on, and has no hazardous chemicals. A bargain at only $149 apiece.
12-2-2007

Try Using SEARCH to Find What You Need.  >10,000 Pages Indexed on RF Cafe !

Copyright 1996 - 2016
Webmaster:  Kirt Blattenberger, BSEE - KB3UON
Family Websites:  Airplanes and Rockets | Equine Kingdom

All trademarks, copyrights, patents, and other rights of ownership to images
and text used on the RF Cafe website are hereby acknowledged.