Archive | April, 2010

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Nokia N8 is here!!!

Posted on 28 April 2010 by yizhan

Well it seems that NOKIA is back…. They have just released their latest, the NOKIA N8, a 12 mega pixels HD handset. With this unit you can make your masterpiece in HD.  Able to add music, image, video and share it where ever you want. It is equipped with a large 12mp sensors and a Carl Zeiss optics that can capture Hi resolution images.

Nokia N8 has an Integrated social networking such as feeds,  facebook, twitter, you can share your photos and videos instantly.  Multimedia?  N8 has it, with its HDMI connection you can easily connect your handset to show your images, photos and videos to a compatible television and projectors.  You can also personalize you Nokia N8 by adding your own three live screen widget, you can set them for your work, or for fun stuff and your image gallery.  You can even add more widget by accessing the OVI store.  Access your favourite TV channels like CNN and National Geographic with N8′s on-demand webTV and start showing it to your Handset.  Another great feature of N8 is its voice-guided navigation and said that you can use it where ever you are and absolutely free.  Just by entering where you wan to go, and the OVI maps with its voice guidance will tell you a detailed route.

Nokia N8 Specification:

  • Size: 113.5 x 59 x 12.9 mm
  • Screen size: 3.5″
  • Resolution: 16:9 nHD (640 x 360 pixels) OLED
  • 16.7 million colours
  • Capacitive touch screen
  • Orientation sensor (Accelerometer)
  • Compass (Magnetometer)
  • Proximity sensor
  • Ambient light detector
  • Internal memory: 16 GB
  • MicroSD memory card slot, hot swappable, up to 32 G
  • GSM/EDGE 850/900/1800/1900
  • WCDMA 850/900/1700/1900/2100
  • Automatic switching between WCDMA & GSM bands
  • Flight mode
  • Symbian ^3 for Nokia
  • Java MIDP 2.1
  • Qt 4.6.2, Web Runtime 7.2
    • HTML 4.1
  • Software updates Over the Air (FOTA) & Over the internet (FOTI)
  • Flash Lite 4.0
  • OMA DM 1.2, OMA Client provisioning 1.1
  • BL-4D 1200 mAh Li-Ion battery
  • Talk-time (maximum):
    • GSM 720 mins
    • WCDMA 350 mins
  • Standby time (maximum):
    • GSM 390 h
    • WCDMA 400 h
  • Video playback time (H.264 720p, 30 fps, maximum): 6 h (via HDMI to TV)
  • Video recording time (H.264 720p, 25 fps, maximum): 3 h 20 mins
  • Video call time (maximum): 160 mins
  • Internal memory: 16 GB music playback time (offline mode, maximum): 50 h

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Electronic Paper Display

Posted on 27 April 2010 by yizhan

Electronic Paper Display (EPD) is a display that has a  like an ordinary ink on a paper, it has a paper-like appearance, not like a LCD  screen display, an EPD never uses a back light.  It uses a reflective technology that is viewable  under a wide range of lighting conditions even in direct sunlight and it also has a very low power consumption.

EPDs are technology empowered by electronic ink, it is an ink the carries a charges that can be update through electronics. E Ink Corporation is now the leading developer of electronic ink and EPD technologies. They manufactures electronic ink that was made of films used as a component to build an EPDs.  The EPD’s were first introduced to public by Sony, Philips and E ink when they release the SONY LIBRIé, a black and white ink-on-paper look of the plastic display film is 170 pixels per inch (PPI) and resembles newsprint.

 As this technonlogy developed from time to time, companies are making an improvement not only in its ink on a parer appearance, but also improving its physical appearance just like a real paper which is flexible and rollable. 

 Vizplex®  a display  made by E Ink, an imaging film that are suited for flexible display applications due to their thin form factor and inherent flexibility. Unlike the LCD’s (liquid crystal display), E Ink display are viewable in any angle and will not distort when you touch or bend it.

  E ink had been developing this technology with other companies and institute  like Arizona State University, Epson, LG.Philips LCD, Plastic Logics and Polymer Vision they have been building  flexible displays for a number of years and has pioneered a number of ‘world’s firsts’ in the display industry.

 

 

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Latest Image Of The Sun

Posted on 22 April 2010 by yizhan

Solar Dynamics Observatory that was lunched by NASA last Feb. 11, 2010 just sent an early image of the sun’s activities, this latest technology saids to give capabilities for researchers and scientist to better understand the sun’s dynamic processes.

Some of the image that was sent show the latest activities, you can see a detailed view of a solar flare emitted by the sun. Richard Fisher, Director of the Heliophysics Division at NASA Headquarters in Washington said, ” These initial image show a dynamic sun that i had never seen in more than 40 years of solar research. ” SDO will change our understanding of the sun and its processes, which affects our lives and society. This mission will have a huge impact on science, similar to the impact of the Hubble Space Telescope on modern astrophysics.

Image Courtesy of NASA

SDO was lunched last Feb. 11, 2010, it is said to be the latest and most advance spacecraft that was design to study then sun. it will examine the sun’s activities and its magnetic field and also provide a better understanding of its effect to planet Earth’s climate and atmospheric chemistry . One capability of the SDO is that it can provide image that is more clear than HD TV.

Image Courtesy of NASA

 

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Sony ericsson’s X10

Posted on 18 April 2010 by yizhan

The Sonyericsson’s X10 just got it all for you.  This latest released from sonyericsson  brings the internet in your hands. It has a lot of feature like Timescape™, putting all your communication needs in one place. Facebook, tweeter, emails, photos and text messages in just one apps, no need to shift applications, want everything from everywhere? well by touching its infinite button, and you have it all instantly.  Need applications?, with the Android Market™ you can customize X10 to make it exclusively yours.  It also comes with a built-in aGPS system so you can never get lost.  Find your way through Google maps™ and wisepilot  and you can also add location info to your images by its geo-tagging function.

Specification :

  • Size: 119.0 x 63.0 x 13.0 mm  4.7 x 2.5 x 0.5 inches
  • Weight: 135.0 g  4.8 oz
  • Screen: 65,536-colour TFT
  • Memory: Phone memory 1GB  microSD™ up to 16GB, 8GB included
  • Battery life: Talk time up to 10hrs  standby time up to 415hrs
  • Camera: 8.1 mega pixel
  • Music: TrackID™, Media Player, Album art,  Bluetooth™ stereo (A2DP), PlayNow™, Music tones – MP3, AAC
  • Internet: Bookmark, Google Search™, webfeeds, web browser-webkits
  • Entertainment: Media, 3D games, YouTube™, Video streaming, video clips, sonyericsson mideascape™
  • Connectivity: 3.5mm audio jack, Wisepilot™, Google Maps™, Bluetooth™, USB port, WiFi™
  • Messaging: Conversations, SMS, MMS, Predictive text input
  • Design: QWERTY Keyboard, auto rotate screen, picture walpaper
  • Organizer: Touch screen, Alarm Clock, Calendar, Calculator, Flight mode, Phone book, infinite button

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Basic Principles of a Camera

Posted on 18 April 2010 by yizhan

Camera, a device used in photography.  All Camera has four fundamental parts:  The body, a light-tight box that  serves as a rigid framework on which all other parts are mounted and also serve to protect the film from exposure to light, except in the process of taking the photograph.  The body is mostly composed of hard plastic and light metal.

Next is  the lens , which is the one responsible for gathering image.  It is mounted in front of the camera body focusing the rays of the light from the object.  In some camera lens, it is in a form of a plastic or glass and in more elaborate camera, its lens is consist of several piece of glass mounted in a cylinder called the lens barrel.  The lens has its light gathering power and it is indicated by the f-numbers or relative aperture, which is usually marked on the lens barrel.  Lenses with low f-numbers have relatively high light-gathering power and are called the fast lenses, while lens with high f-numbers have low light-gathering power and called the slow lenses.   The light-gathering power of most camera lenses are controlled by means of a diaphragm.  In many cameras the amount of light thats strikes the film can be controlled by opening or closing the diaphragm.  The diaphragm resembles the iris of an eye.  When the diaphragm is widely open, it allows a maximum light to pass into it.  When partially closed, it reduces the amount of light that pass into it.  Since closing the diaphragm reduces the light-gathering power of the lens, it has the effect of slowing the lens and thus increasing its f-number.

The Shutter, it is usually mounted behind the lens or between the elements of a complex lens.  Shutter that are mounted lens elements are called between-the-lens shutter while those mounted immediately in front of the film are called focal-plane shutter.  Most shutter incorporate a timing mechanism that makes it possible to vary the length of an exposure.  When set at a high speed such as 1/500 of a second, the shutter admits relatively little light.  For a low speed of 1/5 of a second, the shutter is open 100 times as long and admits about 100 times as much light.   High shutter speed are particularly useful for producing picture of sharp moving objects.

And finally the Film Holder. It holds the film in place at the back of the camera.  It is design to hold the film flat so that the image produced by the lens will be sharp over the whole picture area.  In most roll-film cameras the film compartment is place in to the back of the camera and a spring mounted pressure plate place in the back cover of the camera this pressure plate keeps the film flat across the picture area opening.

In its history, the photographic camera was developed from the camera obscura, a device describe earlier than 1039 by the Arabian Scholar Alhazen.  It consisted of a darkened room with a hole in one wall which light coming from the scene outside formed an image on the opposite wall.  For centuries however, there was no method of recording the image produced, other than drawing it.

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WePad

Posted on 17 April 2010 by yizhan

A new released in the tablet technology, the WePad runs on a android and linux base OS  and has a smarter way to bring the internet in you.  With the state of the art media tablet you can browse the internet, watch youtube , open your email and chat with your friends in facebook .  With its open system, almost all software developer can participate.

WePad Specipication:

  • 11.6 inches touchscreen display with a resolution of 1366×768 pixels
  • Intel Ato N450 processor running at 1.66GHz
  • Battery life: 6 hours
  • Android & linux based OS
  • 2 usb ports
  • Built in web camera
  • Memory card reader
  • Built-in 3g module

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High – Pressure Physics

Posted on 12 April 2010 by yizhan

High-pressure physics, the study of the effect on matter of extraordinary pressure and techniques required to achieve and measure such pressure.  The development of high-pressure physics affords a striking example of how science, by continually building on its achievements of the past,  progress at continually accelerating rate.  The beginning of high-pressure physics as subject of serious scientific endeavor go back nearly two hundred years to experiments by Jon Canton (1718- -1772) published by the royal society of London  in which he established that water is measurably compressible, not incompressible as had been supposed.  The next important experiments  were not made for nearly fifty years.  After this the rate of the progress gradually picked up, and by the end of the nineteenth century there where important center of activities in England, France and Germany.  Early the twentieth century important activities spread to the United States, and now are being conducted in many laboratories in both academic and industrial all over the world, under an increasingly wide range of pressure and with increasingly important results.  We should bear in minds that pressure is defined as force per unit area, and is not the same as force itself.  A very high pressure maybe produced by a relatively small force if it is applied in a very small surface area.

Problem of Techniques. There are many difficulties in high-pressure experimenting, and the initial slowness of progress  was in large part due to the slowness with which the problems of techniques were solved. There are at least three types of this problems:  the  problem of  preventing leakage of the liquid in which pressure is generated and by which it is transmitted; the problem of preventing the vessel containing the pressure from bursting under the action of pressure; and the problem of accurately measuring the pressure and its various effects.  These problems have by now been solved to a large extent, and even on those case where present solutions are inadequate, the principles are understood on winch a more precise solution depends.

Effect of High-pressure. Extensive investigation of the effect of pressure on various physical properties of matter have been made by a writer in the years 1908 – 1956.  In the range up to 30,000 atmosphere it was posible to study nearly all the physical properties of many substances in the general classification of room temperature.  In the range of 30,000 up to 100,000 atmosphere and sometimes beyond, the measurements were more limited in scope, but it was possible to study the effect of pressure on the volume, electrical resistance, and phase changes of nearly all the elements and many other substances, all temperature within a few hundred degrees of room temperature.  Most of  the phase changes induce by pressure are reversible, so that when pressure is released, the material reverts to its original condition.  There are however , a few instance of irreversible changes produce by pressure.  One example is a  phosphorus, which maybe permanently altered by pressure a few tens of thousands of atmosphere, becoming black and conductor of electricity, with a density 50% greater than its original yellow form.

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Hydraulic's Principles

Posted on 11 April 2010 by yizhan

Most of the construction equipment today, uses Hydraulics.  Well for starters, the fundamentals of hydraulics is basically pressure and fluids, by applying pressure to a fluid from one point to another.

hydraulic log splitter, is an example of an equipment that uses the technology of hydraulics.  It is composed of a small 4 stroke engine and pumps that provide pressure to the process, a small tank use as storage of the fluids, a cylinder with a piston and a rod and a spool valve that control the push/pull of  the hydraulic cylinder.

Hydraulic press, is a machine   use to insert parts that needs to be forced fit such as bearings, bushings, sleeves and dowels.  Just like a log splitter they both use the same principles, by which the application of a small force in one point can produce a very large force in another point.  This device is consist of two piston fitting into two cylinder, the two cylinder are different in size, the first one is small and the other is larger in diameter.   The fluid inside is in communication with the two cylinders.  By the principles of  hydraulics, the intensity of pressure, or the pressure per unit area, such as pounds per square inch, is the same every point throughout the system which is at the same elevation.  In  addition, an increase of pressure in any part of a confined fluid causes  an equal increase throughout the liquid. tis statement  is also known as the Pascal’s Principle, after the French philosopher  and scientist , Blaise Pascal (1623-1662).  What ever difference there maybe in pressure due to difference in elevation of two piston is negligible compare to the pressure involve.

As illustrated in the figure below,  the accumulated force from the small piston would be F1 while the accumulated force from the large piston would be F2.  And the area of the small piston would be A1 and for the large piston A2.  By applying the force F1 to the small piston an intensity of pressure will be produced in the fluid which i F1/A1 , and same as the intensity from the large piston.

F1/A1 = F2/A2

But since A2 is much Larger than A1, it is then that F2 is larger than F1. v This is the principle of the hydraulics press that is widely used in the industry.

However, neglecting friction, the process done by F1 must be equal to the process done by F2, then if s represents distance moved by the pistons,    F1 s1 = F2 s2 or s2 = F1/F2 s1.   It is then that the large piston moves only a small distance than the small one.

Hydraulic ram, a device that uses the flow of water through a gradual incline to lift a small portion of the flow of the elevation usually  higher than the source.  The principle of this operation is like a water hammer.  Water is permitted to flow through a long drive pipe with a moderate drop in elevation.  When the flow reach its normal velocity, for the installation for the velocity head (kinetic energy per unit volume) of the water is sufficient to close a waste valve at the lower part of the pipe.   The inertia of the moving water and its relative incompressibility produce a water hammer- a momentary rise of pressure at the lower end of the pipe.  This pressure is sufficient to force a small part of the water through a discharge valve to a higher elevation.  The waste valve opens again, the flow in the pipes is re-established, and the cycle is repeated.

Unlike the log splitter and the hydraulic press, the hydraulic ram is only powered by the momentum of the moving water no prime mover or engine needed to complete its operation, but, the usefulness of this is only limited for special cases.

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Latest from Apple

Posted on 05 April 2010 by yizhan

Many among us has experience the stunning style and beauty of apple’s products iPod, iPhone and Mac Pc. And now, Apple computers released their latest in multi touch screen gadget, the iPad. I we compare, iPad is different from a laptop its more like a slate or other people called a tablet because unlike a laptop, an iPad doesn’t have a keyboard. one more difference is that the way you type and navigate through files and photos on the iPad, you use the touch screen just like in an iPhone or iPod touch, well we can also see that feature in some laptop but not many.

iPad’s multi touch-screen is the same as the one they are using on iPhone, Apple re-engineered the technology for iPad’s larger surface, makes it more precise and responsive.  I has an incredible accuracy when it comes in zooming map, sliding your photos and opening and deleting  your emails.

iPad comes with a 9.7 inches diagonally measured screen and its very thin and light smaller than a magazine.   With the weight of 1.5 pounds and 0.5 inches tin, you could use it almost anywhere.  And an additional slight curves at the back that makes it easy to pick up and comfortable to hold.  One of the best feature of iPad that I like most is the battery life, an iPad can last for 10 hours while surfing the web of  Wi-Fi, watching video, surfing via 3g networks and listening to music. They used the same lithium-polymer battery, its a technology they developed for Mac notebooks computers and applied it to the iPad.

Wireless capability includes a built-in 802.11n, that  takes the advantage  of the fastest Wi-Fi networks. It its also equipped with Bluetooth 2.1 + EDR, it lets you connect to some wireless device like wireless headphone or the Apple wireless keyboard.

iPad uses the A4 chip it was design for an extreme performance yet extremely power efficient. It has a performance that you’ve never seen on a touch-screen based device.  And it has a storage capacity of 16GB, 32GB and 64GB big enough for your photos, movies, music, apps, and more. Sound performance is also good, with the built-in speakers that produces rich, full sound perfect for watching movies or listening to music. It also comes with the built-in microphone and a headphone jack.

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An Amazing Robot

Posted on 01 April 2010 by yizhan

Great balancing ability, this just tells that there is no stopping our technology from growing.

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