Who Invented The Smoke Alarm

smokeDetectorYou may get annoyed at them when they pick up the slightest disturbance in the air and sound like a constant siren, but you own a smoke alarm because if a bad fire-based situation arises in your house, you know that the circular plastic beeper fixed to your wall or ceiling could save your life. The initial cost of a smoke alarm is very cheap, and escalates even more in value for mony if it helps save a life at some stage, so who was it that came up with the idea to create such a functional and standardised product like this?

The history of the smoke detector began with an inventor from America, Francis Thomas Upton, who created the first-ever fire alarm system in 1890, filed as Patent #436,961. There is evidence that a more celebrated colleague of Upson, Thomas Edison had been helping with the development of the device in some form.

Upton had produced a basic version of the smoke detector, and would only be expanded on by a fortunate mistake by Swiss physicist Walter Jaeger, 40 years later. Jager was attempting to develop a sensor for poisonous gas, which did not work as planned, as a meter was supposed to signal when a gas was detected, but did not work, except for when Jager lit a cigarette during his break, and the meter, surprisingly, changed as an effect of the smoke.

These devices had made inroads with the technology involved, but due to high production (and therfore, selling) costs, the product was not made commerciably avaliable until 1965, when Stanley Peterson and Duane Pearsall started developing the first-ever home smoke detectors, making use of batteries, meaning that homeowners could use them without professional assistance. In 1975 Peterson and Pearsall actually began manufacturing and selling smoke detectors, under the name of their company Statitrol Corp.

The devices proved to be a big hit with concerned homeowners, and have developed from larger, metal-based devices, to the efficient, smaller plastic circles that we see today, being sold by many different providers.

A smoke alarm is a common theme for almost all homeowners in a developed society, and it is important to know how to maintain your device. The video below demonstrates how to change the battery of your alarm, and why it is important to do so:

Smoke Detector – Wikipedia

Who Invented The 3DTV

family-3d-movie-at-home3DTV is one of the biggest emerging trends in current society, with the format being snapped up by consumers who want the best available viewing experience. But who was it that first came up with what is considered ‘the next-best-thing to being there’?

Despite what seems to be only a recent breakthrough in 3D technology, and an even more recent release into mainstream society, the 3DTV we know today is what could be seen as a current stage in a process which has been in development since the 19th century.

The 3D movie concept has been developing since 1855, and the invention of a Kinematoscope (Stereo Animation Camera), when it was realised that a precise method of overlaying two slightly different images at a flickering speed could create a ‘3D effect’. The forerunner of this effect was English film-maker William Friese-Greene, and it was dubbed as anaglyphic (the approach that does not need a special TV, and is best known for requiring ‘red-cyan’ glasses to view).

The first movie of this method was produced in 1915, before the first public release of a 3D movie in 1922, and the first colour film in 1935. Since then, the anaglyphic approach has made sporadic forays into the limelight between the 1950’s and now, with home releases for anaglyphic versions of films often being sold in the early 2000’s due to the development of the DVD.

However, various electronics companies and film-makers have been developing the new ‘polarized’ approach (requiring the ‘sunglasses’-style glasses) ever since it took off with 2009 hit film Avatar, and since then, films and TV channels in the format have become standardised, and home use of 3D is higher than ever before.

With the technology to mass produce and sell 3DHDTV’s in place since 2010, it is no surprise that all the major global electronics companies set about developing their own boxes to enter the emerging market. Below is a video of the latest plans for advancement – a 3DTV that does not require glasses. Although Toshiba currently have the shortest estimate for the release of a 3D Plasma TV (for 2015), other companies, such as Intel, are showing their current prototypes, as seen here:

3DTV – Wikipedia