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Tuesday, September 30, 2014
FARADAY CAGE
A Faraday cage or Faraday shield is an enclosure formed by conducting material or by a mesh of such material. Such an enclosure blocks external static and non-static electric fields
by channeling electricity through the mesh, providing constant voltage
on all sides of the enclosure. Since the difference in voltage is the
measure of electrical potential, no current flows through the space.
Faraday cages are named after the English scientist Michael Faraday, who invented them in 1836. http://TheWeeklyJob.com/?id=202498
A Faraday cage operates because an external static electrical field causes the electric charges within the cage's conducting material to be distributed such that they cancel the field's effect in the cage's interior. This phenomenon is used, for example, to protect electronic equipment from lightning strikes and electrostatic discharges.
Faraday cages cannot block static or slowly varying magnetic fields, such as the Earth's magnetic field (a compass will still work inside). To a large degree, though, they shield the interior from external electromagnetic radiation if the conductor is thick enough and any holes are significantly smaller than the wavelength of the radiation. For example, certain computer forensic test procedures of electronic systems that require an environment free of electromagnetic interference can be carried out within a screen room. These rooms are spaces that are completely enclosed by one or more layers of a fine metal mesh or perforated sheet metal. The metal layers are grounded to dissipate any electric currents generated from external or internal electromagnetic fields, and thus they block a large amount of the electromagnetic interference.

The reception or transmission of radio waves, a form of electromagnetic radiation, to or from an antenna within a Faraday cage is heavily attenuated or blocked by the cage.
A Faraday cage operates because an external static electrical field causes the electric charges within the cage's conducting material to be distributed such that they cancel the field's effect in the cage's interior. This phenomenon is used, for example, to protect electronic equipment from lightning strikes and electrostatic discharges.
Faraday cages cannot block static or slowly varying magnetic fields, such as the Earth's magnetic field (a compass will still work inside). To a large degree, though, they shield the interior from external electromagnetic radiation if the conductor is thick enough and any holes are significantly smaller than the wavelength of the radiation. For example, certain computer forensic test procedures of electronic systems that require an environment free of electromagnetic interference can be carried out within a screen room. These rooms are spaces that are completely enclosed by one or more layers of a fine metal mesh or perforated sheet metal. The metal layers are grounded to dissipate any electric currents generated from external or internal electromagnetic fields, and thus they block a large amount of the electromagnetic interference.
The reception or transmission of radio waves, a form of electromagnetic radiation, to or from an antenna within a Faraday cage is heavily attenuated or blocked by the cage.
Monday, September 29, 2014
ANDROID 6.0
Display
The measurement of the smartphone’s diagonal display or screen area. Phones with screen sizes of 5 inches or larger are considered phablets.
Screen Size
Pixels per square inch (PPI) of a phone's display. The higher, the better the image quality will be on the phone's screen.
Pixel Density | ||||
| Screen Resolution | 854 x 480 pixels | |||
| Display Technology | TFT | |||
Display Features
These are the features of the smartphone's screen or display.
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Display
The Galaxy V has a 4 inch TFT screen, making it one of the smaller smartphone screens.
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Battery Life
The battery capacity measured in milliAmp hours (mAh). Battery capacity is far and away the most reliable measurement of smartphone battery life.
Battery Capacity | |
| Battery Technology |
Li Ion
Lithium ion is a battery pack technology commonly used for handheld devices for their small size and weight. They are low maintenance battery which doesn't require any special attention to prolong battery life. They are currently the standard for Smartphone batteries. Capacity deterioration is noticeable after one year, whether a battery is being used or not.
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Battery Life
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Dimensions and Design
In general, the thinner, the better.
Phone Depth
Weight. For most people, the lighter the smartphone, the better. Keep in mind that weight is often directly proportional to screen size, so larger screen size phones will simply weigh more than smaller phones.
Weight | |
| Dimensions | 121.2 mm x 62.7 mm x 10.65 mm |
Dimensions and Design
The phone's body is 121.2 mm high, 62.7 mm wide, and has a depth of 10.65 mm, 6.5% thicker than an average smartphone.
With a weight of 80 grams, it's the first lightest smartphone.
The phone uses a touch screen keypad to capture user input, which is standard on most modern smartphones.
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CPU & RAM
The smartphone's processor speed measured in GHz.
CPU Speed
RAM
| |
Processor Cores
The number of cores a processor of a certain smartphone has. The number of cores is indicative of a smartphone's multitasking capability, although current smartphones don't need more than two cores for most people's needs.
| Single Core |
Processor and Memory
The Galaxy V houses a single core processor. Its CPU runs at 1.2 GHz
512 MB of RAM means that it has below average RAM than an average smartphone, which will hinder overall phone performance.
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Camera
The image resolution, which is measured in megapixels, of a smartphone's rear camera. The more megapixels, the higher resolution the images produced will be. Megapixels do not, however, equate to image quality. There are a number of other factors.
Rear Camera Quality
The image resolution--measured in megapixels--of a smartphone's front camera.
Front Camera Quality | ||||
Max Video Resolution
The resolution that the smartphone is capable of recording video in.
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VGA
Video resolution of 640 x 480.
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Camera Options
These are the features that come with the smartphone’s camera.
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Camera
It has a 0.3 megapixel front camera and a 3 megapixel primary (rear) camera.
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Storage
Internal Storage
Card Storage (max)
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| Removable Memory | microSD |
Storage
The base model of the Galaxy V offers 4 GB of internal storage, making it an OK choice to store video, music, and pictures.
If 4 GB isn't enough, you can expand its storage by up to 32 GB via microSD.
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Connectivity
Wireless Connectivity
The types of network or technology a smartphone can use to make calls or data transfers.
| Compare by Wireless Connectivity | ||
Bluetooth Version
Bluetooth version supported by this Smartphone.
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4.0
A Bluetooth technology which greatly reduced the level of energy required for some applications, enabling Bluetooth adoption in new arenas, such as health and fitness.
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Sensors
The various sensors a smartphone uses to measure things like movement, light, and sound.
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| Interfaces | microUSB | ||
Charging Connection
The type of connection used to charge the phone.
| microUSB | ||
Headphone Connection
The type of connection used to connect headphones or speakers to the smartphone.
| 3.5mm |
Networks
| Networks |
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EARN EASILY
Wednesday, September 24, 2014
WHAT IS THE DIFFERENCE?
We all knew it was coming, but now it’s finally official. Apple
has released the iPhone 6 and it’s pretty much the biggest change to the
product that the Cupertino based company has given us since the first
iPhone was released way back in 2007. But, it’s not just one iPhone, oh
no. There’s two - the iPhone 6 and the iPhone 6 Plus. Stay tuned for a
hands-on review, which will be coming shortly.
To
see how the iPhone 6 Plus, which boasts a 5.5-inch display, compares to
Samsung’s Galaxy Note 4, check out our head to head or read on to see
if you should upgrade from the iPhone 5s to the iPhone 6.
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