IPhone

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Purpose
The IPhone is not only used as a cellular device. The Iphone can serve as a computer, camera, as well as a MP3 player, calculator, etc. The Iphone does virtually anything and has all kinds of applications.

Energy
The Iphone uses electrical energy, to make phone calls and use all the features on the iphone. The iphone also uses kinetic energy for the touch screen, because you use your fingers to touch it, which tells the phone what you want to do.

Controls
1. Ambient Light Sensor- ambient light sensors are used to adjust the brightness or darkness of your iphone's screen, accordingly to the iphone's surrounding. 2. Proximity Sensor- turns the sensors in the phone off so when you take calls it doesn't touch the screen in a way you don't want it to. The proximity sensor will turn off automatically when you lift the iphone to your ear. 3. Touch Sensors- Signals travel from the touch screen to the processor of electrical impulses The processor analyzes the data to determine the feature of each touch When you move your finger, the iphone's processor can determine which feature you touched by analyzing the starting point and the ending point [|For more information on the iphone click here]

- flexible transparent surface (screen)** - the top layer of the touchscreen, this is what you put your finger on and apply pressure on. It repels dirt and oil from your fingers, and it senses where you applied pressure. - This layer allows "multi touch". When you touch it, the circuit is complete and allows the command you entered ( lets say clicking on an application) to work. It only works when something conductive (like your finger) touches it. - This is the visual part. This is the part that lights up the phone and makes you able to view everything on the phone.
 * About the touchscreen materials:
 * -transparent conductive layer**
 * -The LCD layer**
 * - The glass layer** is what holds and keeps the layers together and safe

Need more information? click the article below: How Iphone touchscreen works

Materials
The iphone is basically made of several different layers 1.LCD display layers- LCD stands for liquid crystal display. This is a flat panel made up of color pixels filled with liquid crystals put in front of a light source or a backlight. These LCD layers are scratch resistant and respond to heat. So using a stylus will not work. 2. Different types of glass are included in the materials of an iphone as well 3. Several sensing circuits, for the touch screen on the phone 4. Protective coating layers on the top

Science
Radio Waves
 * The main scientific principle of an Iphone is radio waves
 * Radio waves are electromagnetic magnetic waves
 * The iphone broadcasts signals on radio frequencies
 * Radio waves send electrical energy between two places without using wires
 * All radio waves have a certain length, frequency, and speed
 * The speed is how fast the wave moves between two places, the frequency is the number of waves that arrive each second, and the length is the distance between one wave peak and the next

Design:
=__**External view:**__=

Evolution
Evolution on the iphone is available. Now you can upgrade your phone to the newest iphone versions, which are improved from the previous versions and also usually have new and better features. In June of 2008, apple introduced the upgrade for iphone to the 3g. In the 3g, they improved the memory, 3g coverage was added, gps, and software updates too. The following year apple introduced the new iphone 3gs which included video recording ability and became faster and improved battery life. And the summer 0f 2010, there will be a new 4g which will be thinner, better battery life, and a web cam too!

Competitors
Google Nexus one, HTC Droid Incredible, Palm Pre

Partners
Ipod touch ipad

Siblings
Computers Cameras Calculator ipod Radios Communication devices