RF Cafe Homepage
ConductRF Phased Matched RF Cables - RF Cafe

Anatech Electronics RF Microwave Filters - RF Cafe

Copper Mountain Technologies (VNA) - 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

Advertise your products and services on RF Cafe

Day in Engineering History Archive - July 1

Day in Engineering History July 1 Archive - RF CafeJuly 1

Happy Canada Day! Click here to return to the RF Cafe homepage.Today is Canada Day. 1788: Jean-Victor Poncelet, who formulated the Continuity Principle (which includes the principle of duality and the method of reciprocation), was born. 1860: Charles Goodyear, who invented vulcanization of rubber, died. 1872: Airplane designer Louis Blériot, was born. 1901: The U.S. Standards Bureau became effective, later to become the National Institute of Standards and Technology (NIST). 1909: Thomas Edison began commercial manufacture of his new "A" type alkaline storage batteries. 1912: Harriet Quimby, the first female pilot to fly across the English Channel, died. 1934: The first X-ray photograph of the whole body taken in a one-second exposure in Rochester, N.Y. 1963: The U.S. postmaster introduced the five-digit ZIP (Zone Improvement Post) code. 1971: Nobel laureate Sir Lawrence Bragg, developer of the Bragg law of x-ray diffraction, died. 1979: The first Sony Walkman went on sale. 1980: "O Canada" was proclaimed the national anthem of Canada. 1983: R. Buckminster Fuller, inventor of the geodesic dome and after whom the Buckeyball (the Buckminster Fullerene) was named, died. 1997: China resumed sovereignty over Hong Kong. 1999: Forrest Mars, inventor of M&M candies and the Milky Way bar, died. 1999: Exactly 6 months before the year 2000, Congress passed legislation to shield businesses from a potential flood of Y2K computer-related lawsuits. 2001: Nobel Prize winning Russian physicist Nikolay Basov, who developed the maser, died.

| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |

Note: These historical tidbits have been collected from various sources, mostly on the Internet. As detailed in this article, there is a lot of wrong information that is repeated hundreds of times because most websites do not validate with authoritative sources. On RF Cafe, events with hyperlinks have been verified. Many years ago, I began commemorating the birthdays of notable people and events with special RF Cafe logos. Where available, I like to use images from postage stamps from the country where the person or event occurred. Images used in the logos are often from open source websites like Wikipedia, and are specifically credited with a hyperlink back to the source where possible. Fair Use laws permit small samples of copyrighted content.

Advertise your products and services on RF Cafe
Amplifier Solutions Corporation (ASC) - RF Cafe

dB Control dB-9006 Magnum Opus Synthesizer - RF Cafe