Slashdot Mirror

Here's two pages on the history of the telephone invention:
Bell as inventor
Marconi as inventor
But you're right about Bell corp. Here's ATT's history

Here's two pages on the history of the telephone invention:
Bell as inventor
Marconi as inventor
But you're right about Bell corp. Here's ATT's history

Mine came with a remote control. It was ultrasonic so I figured it had to be at least from the civil war.

>The BBC was from the very start conceived as a television and radio broadcasting company.

Pardon my ignorance, but how can the BBC be conceived a TV broadcasting when
television was not invented (patented) till 1927.
>The BBC was formed as a corporation in 1922 and received its royal charter in 1927. The first televisionsignals were broadcast in 1936. The Hansard records of the House of Commons debates demonstrate thatthe potential of television was fully understood.

Can you provide the link or references to the date of the Hansard records for such debates?

It does not take a great leap of imagination to realize the potential of combining the movies and radio.

Please elaborate on the point of the statement with regards to protecting the newspaper barons from TV.

somebozo writes "The facsimile machine, introduced in 1966, is an amazing device that sends images through a phone line! It's far quicker than sending something in the mail and a real advancement in communications technology! Prior to learning about the fax machine, I had never learned about it before. Very interesting." Gee, we are really running short on stories today.

Urban legend. Never happened.

I thought the air conditioners used the same principle as refrigerators. And that was first built a bit earlier (19th Century in Pennsylvania and Australia, ether machines) and the first practical system was built by Ferdinand Carre (France). Isn't air conditioning just an application of an earlier invention to a "new" area? You know, instead of cooling dead meat, it cools the living? :-)

Quoth the article:
Low-frequency versions of terahertz waves are known as millimeter waves, and they behave much like radio waves, Star Tiger engineers say. At higher frequencies, the terahertz waves straddle the border between radio and optical emissions.

Visible light has wavelengths up to around 750 Nanometers. Infrared has wavelengths extending (depending on who you ask) from there up to some number of micrometers.

At a frequency of 1 terrahertz, light has a wavelength of the speed of light (per second) / 1 trillion.

c per second is about 300 million meters.
300 million meters divided by 1 trillion is about 300 micrometers. A typical microwave oven uses a wavelength of about 100 micrometers. (The link has some other helpful info about spectrum, but also some typos.)

This IS microwave radiation.

I don't know why they've decided to start calling them "T-Waves." I'd geuss that they're gearing up to put them into airports, and that somebody decided that they don't want to call them "microwave cameras" so that people aren't afraid of being cooked somehow.

Incidentally, Microwave detection is not a new development; the Military has been using Microwave transmitters since the 70s. What is new about these newer cameras is their sensitivity/accuracy; previous generations of microwave cameras were not sensitive enough to image much of anything.

Weren't cars invented in the USA?

From here: "The earliest ancestor of the modern automobile is probably the Fardier, a three-wheeled, steam-powered, 2.3-mph vehicle built in 1771 by Nicolas Joseph Cugnot for the French minister of war."

There was life on earth before USA were made.

But you don't get free cars.

Oh you don't? In France we do! :)

Erector sets with motor: to heck with Mindstorms. I was building destructor the robot with this thing when I could barely walk. That was a concept ahead of it's time.
Here's a great quote: "The first artificial heart constructed at Yale was powered by an Erector Set motor."

The remote control: Let's face it. We still don't need the dang thing and we couldn't live without it. It fits the definition perfectly.