Royalty Free Articles by Category
Science & Technology Articles

1. 

The term PPI is not used much. Many people confuse PPI with DPI or have never heard the term PPI. PPI is a measurement of the quality of a print and understanding this term and what the number means can help you determine the right sizes and resolutions for your next digital photo print....

• Date Added: 8/26/2006
• Views: 277

2. 

Mensa was founded in 1946, in England. The Mensa Society was formed specifically for intelligent individuals. The aim of Mensa was to create a non-political society free from all forms of racial or religious distinctions, that focussed on exceptional intelligence. All are welcomed into Mensa...

• Date Added: 5/22/2006
• Views: 366

3. 

The first atomic clock came into existence in 1949. The U.S. National Bureau of standards was the home of this prototype of modern atomic clocks. The first accurate atomic clock was designed in 1955. This clock was based upon the transition of the caesium-133 atom. The discovery of this technology...

• Date Added: 5/18/2006
• Views: 333

4. 

A linear motor is-simply speaking-an electric motor that uses a linear force mechanism to generate the power needed for a said application. In contrast to a rotational electric motor (found in automobiles, appliances, and commonly-used electrical equipment), a linear motor generates its energy...

• Date Added: 11/2/2006
• Views: 378

5. 

Digital photos are stored as files on memory cards and computer hard disks. They can be stored in different file formats (each format has a unique file extension). Digital photo files can be compressed to save storage space and can use a standard or a proprietary format.

Digital photos are...

• Date Added: 10/2/2006
• Views: 305

6. 

Many regular homeowners want a spy camera to protect themselves from thieves and burglars. Another reason is that they may want to spy on some of their family members. Such homeowners usually do not know exactly what they want and need.

There are so many (maybe even too many?) options on...

• Date Added: 9/14/2006
• Views: 305

7. 

There is a lot of hype right now about hydrogen fuel and its possible uses. The technology is no longer theory; we are seeing in action. Unfortunately it could still be 10 - 20 years before we see this technology in abundance.

Many people look past the obstacles too easily, simply hoping...

• Date Added: 6/6/2008
• Views: 13

8. 

Digital cameras use a sensor known as CCD in order to convert light energy to pixels. Dust that accumulates on the CCD can result in black pixels or imperfections in the photo as it blocks light energy from hitting parts of the CCD. We will go over a few solutions for eliminating dust on the...

• Date Added: 8/30/2006
• Views: 290

9. 

There is nothing worse than being duped. Not only do you feel like an idiot, you are left to pay for an item or service you don't want. The latest scam is the ringtone subscription service. Companies advertising free ringtone downloads, targeted at teenagers, have caught many users in expensive...

• Date Added: 12/27/2005
• Views: 442

10. 

Over the past several years the use of web -based collaboration tools, such as web conferencing services and extranets, has grown dramatically in support of the increasing number of work groups with geographically dispersed...

• Date Added: 2/14/2006
• Views: 340

11. 

If we look over the last century and examine the rate of technological growth. We can forgive ourselves for feeling a little proud about how quickly things have moved forward compared to the previous centuries. Flying at speed. Moving underwater stealthily. Travelling in space to name a fraction...

• Date Added: 2/28/2007
• Views: 246

12. 

It seems like technology is headed for a massive telephone change over. The traditional Public Switched Telephone Network (PSTN) is looking to be replaced by VoIP. VoIP is short for Voice over IP. VoIP is the routing of conversations over an IP network or the Internet. VoIP uses a packet-switched...

• Date Added: 8/20/2005
• Views: 426

13. 

Most people heard the term DPI. In most cases the term is used in the wrong context to express the number of pixels in a photo, the number of dots in a print or the maximum dots per inch a printer can output. A relatively new term PPI was introduced in order to resolve this wrong usage of the term...

• Date Added: 8/26/2006
• Views: 322

14. 

Just to look at one of these devices these days you could believe that the claims about damage were either false or wildly exaggerated at best. This is especially true of the newer, smaller phones that are constantly being released onto the market. You may believe that if you hit someone on the...

• Date Added: 2/20/2006
• Views: 339

15. 

The popularity of cellular phones all over the world has simply exploded and you can't go anywhere in the world, not even a poor country that does not even have hot water, where people are not walking around with cell phones. The popularity of these phones is obvious because it makes interpersonal...

• Date Added: 1/7/2006
• Views: 389

16. 

An image, of course, is any visual representation. Still images, such as photographs and drawings, capture a single, visual moment in time; while moving and video images, such as television and movies, are able to capture entire periods of time.

A digital image is simply an image that can...

• Date Added: 5/17/2006
• Views: 324

17. 

Taking stable and sharp photos is hard in some situations. For example when taking a photo using high zoom lenses even the tiniest camera movement will result in a blurry photo. The reason for that blurriness is that while the shutter is open and the photo is being captured the camera moves and...

• Date Added: 8/29/2006
• Views: 293

18. 

Stamping has undergone a metamorphosis from the the time it was first brought into use. Not really a new phenomenon, the trend dates back to 3000 BC when seals were used for the purpose of communication as humans were yet to devise a proper language. That was the era when stamps and seals were...

• Date Added: 5/23/2006
• Views: 300

19. 

Sometimes you find yourself in a situation when you have to scan paper prints, negatives or slides and store them as digital photos on your computer. Although the reason for doing that can vary there are some common considerations to scanning paper prints. In this article we will go over some of...

• Date Added: 8/26/2006
• Views: 371

20. 

Samsung has come with the deadly duo of Samsung X820 and Samsung X830. Both these handsets are endowed with distinctive looks and astonishing features.

Samsung X820 belongs to the Samsung's ultra-thin range and is the world's slimmest mobile phone with a thickness of only 7 mm. Even with...

• Date Added: 12/8/2006
• Views: 268