How Tasers Work.

Yes, I know it has been a long time since I post a post in the blog. I was on holiday and could not use the computer. Even my Iphone does not have safari. So anyway here is my new post of how tasers work.

Tasers are what police use to stun their target to take them to jail. But how do they work? First let me tell about the advanced Taser X26. Its power source is a Lithium battery which is inside the handle, when you on gun the laser for pinpointing targets will be on. Install the air cartridge on the front of the gun, when you press the trigger, two probes will shoot out to 6 m to temporarily stun the target with 1200 volts.

But why not use chemical sprays or hand guns? Well, the effected target zones for chemical sprays is only at the brain while hand guns effects the brain and heart but the taser effects the whole body including the cells and nerves.

So thats all for tasers. Bye!

Green Energy

You all have seen the disaster of nuclear power stations in Japan right? So how can we prevent the same thing from happening again? The answer comes from our biggest friend NATURE. Like using wind and solar.


When the wind blows onto the wind turbines, the rotors only spin about 18 RPM, not fast right? So in the rectangular like thing at the back of the rotor, the rotor is connected to a series of gears that multiplies the speed of the rotor 50 times, so the generator spins about 1800 RPM giving us allot of electricity.

Solar energy is using the power of the sun and converting it into electricity, so how does it work? There are two ways of capturing the power of the sun. The first one is using photovoltaic devices like solar cells, they change the sun's energy into electricity. A few of these solar cells can be use to make solar panels that can be placed on houses, calculators, headphones and on large empty fields that have direct energy from the sun. the second one is by capturing the sun's heat by using solarthermolelectric power plants generated electricity by concentrating the sun's heat boil water produce steam, the steam then spins a set of turbines to produce electricity.

So that's part 1 of my post of green energy see you soon!

How Do Touch Screen Phones Work?

Have you ever wondered how touch screen phones work? If you do, you came to the right place!

Before I start, we must know the three types of technology in touch screen: resistive, capacitive and infared.

Examples of touch screen phones using resistive technology are: Samsung Messager Touch, Samsung Instinct, HTC Touch Diamond and LG Dare. At the back of the screen of a touch screen resistive technology using phone, there are many small dot seperating multiple layers of material that transmits currents. When one touches the flexible layer, it pushes it into the lower layer, it then calculates the location one has touch. Its screen is made of a flexible material placed over a layer of glass. One may touch it with bare hands, when wearing gloves or use a stylus. Outdoor visibility is poor which is bad when it is a sunny day and when one is wearing sunglasses. It does not have multi-touch possibilities and the screen will wear over time and will need replacing.

Now for capacitive technology phones: Huawei Ascend, Sanyo Zio, Apple's Iphone, HTC Hero, DROID Eris, Plam Pre and Blackberry Storm. Currents are broadcast from the corners of the screen, When one touches the screen, the current are changed and location will be Calculated.

The screen for Capacitive phone is made of glass. One can only use bare hands only, outdoor visibility is clear for those wearing sunglasses. Multi-touch possibilities and the screen will only shatter during a major impact.

Finally, we have infared technology phones. There are two types: Heat-sensitive and Optical. Examples are: Samsung U600(heat) and Neonode N2(optical).

Heat types must be touched with warm objects to register point of impact. Optical uses sensors that creates a grid of invisible beams just above the screen, area of impact is calculated on the point where the X-Y axis is interrupted. Both types uses glass screen that shatter during a major impact only. One can only use warm hands when using heat-sensitive phone and can use bare hands, gloves or a stylus to use optical phones. Good outdoor visibility with strong ambient light impacts productivity and precision. Multi-touch possibilities.

After read this, hope you guys will understand how touch phones work. Hope you all a fun time choosing a new touch phone. BYE!!

Welcome!

Greetings from the Science and Technology Blog! Here is where you can post anything about science and technology. If you want to join, just ask for an invitation by commenting on the newest post! Welcome and hope to see you soon!