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Day in Engineering History Archive - June 19

| 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.
Please submit significant historical events and dates for inclusion in these lists. I will be glad to include your name and birthday. Please do not submit your death date ;-)
A couple 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.

June 19

Happy Birthday Blaise Pascal!  Please click here to visit RF Cafe.

 FCC Logo

1623: Child prodigy and mathematical genius Blaise Pascal was born. 1851: Silvanus Thompson, authority on electricity, magnetism and acoustics, was born. 1900: Michael Pupin was granted a patent for reducing signal attenuation on a cable , enabling long distance telephony. 1910: The first airship passengers flew aboard the zeppelin LZ7 Deutschland. 1931: Installation was completed on the first commercial doors operated by photoelectric cell. 1934: The U.S. Congress established the Federal Communications Commission (FCC), which replaced the Federal Radio Commission (FRC). 1953: Julius and Ethel Rosenberg were executed at Sing Sing Prison in Ossining, NY, having been convicted of conspiring to pass U.S. atomic secrets to the Soviet Union. 1970: The Patent Cooperation Treaty was signed.1977: The Trans-Alaska Pipeline began carrying oil from the Arctic Ocean to Prince William Sound. 2007: NASA astronaut Suni Williams set a new record for time in space by a female (>188 days).

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RF Cascade Workbook is a very extensive system cascaded component Excel workbook that includes the standard Gain, NF, IP2, IP3, Psat calculations, input & output VSWR, noise BW, min/max tolerance, DC power cauculations, graphing of all RF parameters, and has a graphical block diagram tool. An extensive User's Guide is also included. - Only $35.
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