Category Archives: Web Wanderings - Page 9

The Last Lone Inventor: How Philo T. Farnsworth Invented Television and Died Penniless

One of the books that has been on my reading list for a while now but that I just haven’t been able to get to is “The Last Lone Inventor” by Evan I. Schwartz which details the invention of Television by Philo T. Farnsworth.

As the story goes the major labs were having a hard time making television work when farmhand Philo T. Farnsworth noticed the horizontal lines drawn across his field by a plow. Eventually this led to the invention of the scanning cathode ray tube (CRT) commonly called television. What followed is a tale of intrigue, deceit and a lengthy courtroom battle pitting radio giant RCA and broadcasting king David Sarnoff against the “Last Lone Inventor”.

Both Sarnoff and Farnsworth died in 1971, and the contrast couldn’t have been greater. Farnsworth was broke, severely depressed, and largely forgotten, while Sarnoff left behind a bountiful estate and was widely commemorated as a pioneer and visionary.

Wired has an adaptation of the book on their website which is worth a read, of course if you’re really interested be sure to check out “The Last Lone Inventor” by Evan I. Schwartz.

Inventing the Telephone

Many people know that Alexander Graham Bell and Elisha Gray both filed a patent for the telephone on February 14, 1876 with Bell beating Gray to the patent office by just a few hours. Fewer know of Antonio Meucci who invented the telephone in Italy about 1850. Upon his arrival to the United Stated Meucci submitted his design to the New York District Telegraph Company which shelved the idea. Fed up with the run around from NYDTC Meucci finally submitted a patent cavet in 1871 which is less expensive than a patent but grants fewer rights and expires in three years. In 1874 Meucci had no money to renew the cavet and so he lost out on what was possibly the most popular invention of the period.

For his part, Bell offered to sell the patent outright to Western Union for $100,000. The president of the company balked, countering that the telephone was nothing but a toy. Two years later, he told colleagues that if he could get the patent for $25 million he’d consider it a bargain. By then it wasn’t for sale.

More information on the patent history surrounding the invention of the telephone can be found in this article at AmericanHeritage.com

Technically Tapping

If you’ve ever wondered how the technical side of wiretapping works this NetworkWorld article is for you.

The most common type of tap is a pen register (otherwise known as trap and trace), which produces a log showing what numbers were called, and the dates, times and durations of the calls. The second type intercepts the content of the call.

Without going into excruciating detail this article gives an excellent overview of the types of wiretapping and how each type is accomplished. Some relevant laws and tapping methods for data networks are also discussed. If you’re unfamiliar with wiretapping technology this article provides a great jumping off point for further research.

From the Trenches

One of the things I enjoy collecting are tech support calls where the user makes a complete fool out of themself. I’ve got an interesting and enlightening collection of those. Along the same lines are some of these real stories from tech support recently published in NetworkWorld.

“You have to have a good sense of humor to work at this,” says Jeff Whitmore, director of IT at guitar strings and accessories maker Ernie Ball of San Luis Obispo, Calif.

“My favorite request is from people wanting me to ‘Restart the Internet [because] it seems frozen,'” he says. “I’m going to quit the day I stop laughing at some of the things people think we should and can do.”

With users like this who needs TV comedy?

Old Apple Software

Apple Computer has a great web site with links to old drivers, software updates and even operating systems. Stretching back to the Apple II days and up to just before OS 8 this is quite the treasure trove for a vintage Macintosh collector such as myself. Heck, they even have updates for the ill-fated Newton PDA operating system should you be so lucky as to have one of those.

Songs about Phsyics

Sometimes what feels so right is so very wrong. Walter F. Smith Associate Professor of Physics at Haverford College has a website called PhysicsSongs.org. Naturally, the site features lyrics about physics set to your favorite tunes ranging from “Twinkle, Twinke, Little Star” to the “Macarena”. If you’re really a glutton for punishment you might check out the first ever physics song sing-a-long taking place at the March 15 annual meeting of the American Physical Society in Baltimore, MD. Oh, the website is very bright and reminiscent of those 1990s websites you just love to hate.

Radio over VoIP

In a followup to an earlier article about the Cisco IPICS system I have received some additional information that seems to indicate my preliminary analysis was correct. If you remember when Cisco launched their IPICS ’emergency communications system’ I suggested it was really more of a way to tie existing communications systems together than a new system itself.

It seems that Cisco has been looking into this for a while and ostensibly created this product to fill an internal company need for connecting disparate communications systems. This case study explains how Cisco created a Land Mobile Radio (LMR) over IP product to fill a need to communicate with their own security personnel. The end product is described in this Cisco whitepaper entitled “Cisco Land Mobile Radio over IP Solution Reference Network Design”.

The LMR over IP product is a card which can be installed in any of the voice capable Cisco routers and provides an interface that connects full-duplex VoIP datastreams to speaker, mic, push-to-talk (PTT) half-duplex devices. Signaling is via standard H.323 and the card uses RTP audio with a variety of codecs. The card used is called a VIC Ear and Mic (E&M) interface and was originally used to connect VoIP to some legacy PBX hardware. Technical information about the E&M interface can be found in this technical publication. If your LMR equipment supports a half-duplex T1 that can be used as a trunk interface instead.

As a friend pointed out the existence of support for this type of configuration presents some interesting ideas for amateur radio VoIP projects. Without going into too much detail the current preferred methods of connecting amateur radio stations with VoIP is to use either the Echolink or IRLP project. Both of these have a significant number of problems, one of which is that they require a computer to be attached to the radio. It would be much nicer to attach a (more stable) router to the radio instead. This merits some more research. Once you got a radio attached to a VoIP phone system such as Asterisk there’s all kinds of interesting possibilities.

Rocket Man

If you haven’t heard about Juan Manuel Lozano perhaps you should. Lozano has devoted most of his life to building a personal jetpack at his home 50 miles south of Mexico City. Along the way he has invented and sold a distiller for 90% pure Hydrogen Peroxide (which he uses to fuel his jetpack) and a super efficient “Penta M” catalyst pack which converts the fuel into steam. He has no formal education beyond high school and only standard aerobatic pilot training. Popularized in the 1960s by Wendell Moore of the Bell Aerospace company the devices have been featured in everything from James Bond films to the 1984 Summer Olympics. Lozano has successfully completed a series of tethered test flights with his rocket pack and hopes to perfect and begin selling his design for $350,000 each. Considering that only 12 people have ever flown untethered rocket packs that’s no small feat. It’s also one that has earned Lozano and his company, Technologia Aerospacial Mexicana, a prime article by Larry Smith in the March 2006 Popular Mechanics magazine entitled “Ready for Takeoff?“. It’s a great article and I encourage you to read up on this amazing tinkerer and backyard rocket scientist.

Controversial Internet Humor

If you’re not upset with raw language and enjoy quirky internet humor be sure to check out “The Best Page In The Universe“. This website run by self-congratulatory webmaster George Ouzounian (Maddox) is full of satire bound to upset and offend just about everyone. At least he offers equal opportunity offense. Originating from a 1997 list of 50 things he hates the site has grown to include such diatribes as “The most expensive $94 Orbitz will ever make” or “Star Wars Episode III: a steaming pile of Sith”.

The site is so popular it has spawned a fan page, aptly named “The Second Best Page In The Universe“, a Mothers Against Maddox hate site and even a Wikipedia entry. Controversy surrounding the site has led to it being blocked by several countries and the Websense filtering program. Of course Maddox takes this all in stride. A true internet ledgend. Now, if only I could find a folk song about Maddox and his site.

Photography in Minnesota

The Minnesota Center for Photography is the “leading center for photography in the upper Midwest” and regularly showcases photographic exhibits. They have recently re-launched their website and hope to start offering members access to darkrooms at their Minneapolis location later this winter. In addition, members have the ability to display their work in rotating “spotlight exhibitions” and can access a library of photography related information.