Showing posts with label technology. Show all posts
Showing posts with label technology. Show all posts

Monday, July 16, 2012

Why Cell Phones Are Banned On Flights?


I was on a short business trip last week and something occurred to me... we can now do so much while in the air, like use wifi to surf the web, watch movies or even play video games – so how come we still can't use a cell phone while on a flight?

The thing is, while in theory a cell phone might interfere with avionics, in reality it's pretty unlikely that making a call would send your aircraft on a downward spiral ending in collision! Aircraft cockpits and communications systems are heavily protected against electromagnetic and other interference since the 1960s. So what is the deal with no cell phones on flights?

Apparently a lot of it does have to do with the call carriers, if cell phones search out signals at 35 thousand feet they will hit hundreds of towers simultaneously which can result in a need for complicated roaming agreements and most providers just don't want the hassle of ensuring they are properly compensated and so the ban has remained in place despite the fact that it poses no risk. Of course much of the carriers reluctance comes from the fact that there is not a huge demand for the service. Airline industry analyst, Henry Harteveldt recently said, “Americans don't want to be stuck next to some Chatty Cathy bragging about last night's conquest.” Recent surveys indicate that only 16 percent of frequent fliers have any interest in using a cell phone inflight while the rest are heavily opposed to it.

I think I agree, I actually like that during the time I am on a flight I am unreachable, I have the rare chance to just relax and read a book or listen to music. It's bad enough when you have drunken idiots or fussy children without adding 80 cellphones into the mix as well!

Sunday, July 1, 2012

How Do Planes Fly?


Even although I am a total technology geek, there are still some things which I really cannot get my head around. One of those things is air travel. Actually, no, that's not completely true. I can grasp some types of air travel – birds, light weight gliders, helicopters.. the type of air travel I really mean is passenger travel. Jumbo Jets! Big metal tubes weighing thousands of tonnes. How do they stay airborne?

I mean, don't get me wrong. I get the physics and the mechanics and the theory of how an aircraft flies, but if you really consider the reality of it you might just blow your mind! How does something so big and so heavy stay in the air. That's truly a miracle of modern technology if ever I saw one! Think about a brick. If you threw it into the air it would soon plummet back to Earth, yet an aircraft will stay up for hours at a time! Pretty amazing right?

The basic answer to the question 'how do airplanes fly?' is that four different forces are exerted on the craft : lift, weight, thrust and drag. Each of these does it's own part to keep the airplane in the sky. Lift pushes it up and is assisted by the carefully designed shape of the wings. Weight forces the plane back down to Earth and aircraft are designed so that the weight is spread evenly across the craft so it remains balanced. Thrust is the force moving the plane forward and is powered by the engine which helps keep air moving over the wings. Drag is the force that slows the plane down – like walking into a strong wind. When all four forces are exerted on the plane from four directions (up, down, forward, backward) the plane will remain in the air – with a little help from the pilot of course!

Saturday, June 23, 2012

Animated Tattoos


Tattooing is perhaps one of the oldest and most widey accepted forms of body modification. The practice is considered totally safe these days thanks to modern technology. Tattooing is carried out using a sterile tatoo machine which has remained true to it's origina incarnations invented in the 1800's. The only changes have been in safety and sterilization. The actual process of tattooing has not really changed very much – until that is, the recent launch of animated tattoos!

That's right – you did not misread it – ANIMATED TATTOOS.
This new generation of body art is exactly what you imagine. A moving image implanted under the skin. The tattoos are officialy named Programmable Subcutaneous Visible Implant (PSVI) and is constructed of a modified lcd screen and magnetic power source. The technology which we see every day in digital watches TV screens has been modified to allow a single colour anmated image to be shown through the skin. While the implant is pretty permanent, it is possible to reprogram the image if the wearer requires a change of design. The tattoo needs to be recharged every twelve hours by way of a special charger with a regualr plug on one end and a magnetic connector on the other which links to the one under the skin. It is not necessary to actually plug something into the body.

The procedure is not actually legal as it has not been fully tested for medical safety. However, the inventors say they hae carried out the process over 60 times. They would not reveal the cost, but say it's in line with a high end flat screen television and that if you can find them – and you check out – they will happily perform the procedure.

So what do you think? Would you have an animated tattoo?

In similar news, I saw a video of a guy getting the supposed first animated tattoo last summer, but his was a QR code on his chest which when scanned revealed a cartoon on your cell phone. Sorry dude, but these PSVI implants make your animated art look weak!

Monday, June 18, 2012

Various Uses Of Thermal Imaging


When it comes to technology, it can be amazing how some tools can be used for a variety of different tasks. One such versatile tool is thermal imaging equipment. Let's take a look at some ways in which infrared is put to use every single day in a number of fields from law enforcement to home maintenance.

Law Enforcement

Thermal imaging technology is put to good use in the field of law enforcement on a regular basis. This allows more effective management of surveillance operations, more accurate investigation of crime scenes and the ability to locate suspects in difficult to navigate terrain. At night, it can be difficult to locate a fugative who is dressed in dark clothing – even with the use of a flashlight. However, with the help of thermal imaging technology it is possible to locate them by tracing the heat signature emitting from their body.

Night Vision

Thermal imaging cameras are commonly used for night vision by the military and by search and rescue personel. Night vision devices detect heat radiated by humans, animals and machinery and converts it to an image representing the size and shape of the object. Military uses include directing night operations while search and rescue can make sure that nonresponsive victims can be found in the dark.

Maintenance

Thermal imaging also has uses in maintenance. It can be used to detect if machinery or building structures are in need of repair. The excessive heat picked up could be an indication of a leak that needs addressed. It can also be used to identify structural defects or inadequate building materials. This can be useful in finding out if flooding has caused any structural damage.