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Why is The Sky Blue?

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On a clear sunny day, the sky above us looks bright blue. In the evening, the sunset puts on a brilliant show of reds, pinks and oranges. Why is the sky blue? What makes the sunset red?
To answer these questions, we must learn about light, and the Earth's atmosphere.

 

 

 

THE ATMOSPHERE

The atmosphere is the mixture of gas molecules and other materials surrounding the earth. It is made mostly of the gases nitrogen (78%), and oxygen (21%). Argon gas and water (in the form of vapor, droplets and ice crystals) are the next most common things. There are also small amounts of other gases, plus many small solid particles, like dust, soot and ashes, pollen, and salt from the oceans.
The composition of the atmosphere varies, depending on your location, the weather, and many other things. There may be more water in the air after a rainstorm, or near the ocean. Volcanoes can put large amounts of dust particles high into the atmosphere. Pollution can add different gases or dust and soot.
The atmosphere is densest (thickest) at the bottom, near the Earth. It gradually thins out as you go higher and higher up. There is no sharp break between the atmosphere and space.

Step by Step Guide: Make Windows 7 Faster

                                                                            

 

Windows 7 is a new product of Microsoft but thousand of user complain that their Windows 7 works very slow. People are trying really hard to make Windows 7 faster. Usually people get frustrated working on their slow computer. Windows 7 is the next generation operating system that will mark a dramatic improvement in the way the operating system takes advantage of the graphics.

 

 

Follow these guidelines to improve your Windows 7 working speed:
 1. Disable the Windows 7 Sidebar and Gadgets
If you never use the Gadgets, and if you want to disable the Windows 7 sidebar, here is how you can do it.
Right click on the sidebar and select Properties. On the properties windows untick the check box showing “Start sidebar when Windows Starts”. From now on windows sidebar won’t start when windows 7 start up.

Lanic: voice communication between computers connected in a LAN

OverviewLanic is a LAN Intercom, a tool for voice communication between computers connected to a Local Area Network. Its operation is comparable to a classic intercom.
The initiating computer can select the computer to which it wishes to make a connection in a list displaying all the currently connected machines on which Lanic is running.
Though Lanic makes use of the TCP/IP protocol, it is not intended to be used as an Internet Phone. Doing so may crash the local and/or the remote computer.

Hubble's Amazing Gaze Extends to Edge of Universe

Ever since the days of Galileo and the first optical telescopes more than 400 years ago, astronomers have been looking for ways to cast their gaze farther and farther into the heavens around us. Today, thanks to the earth-orbiting Hubble Space Telescope, that gaze has reached to the very edges of the known universe.

Source : www.voanews.com, www.youtube.com

Photos: Gaddafi's female bodyguards

Whether he is under siege or on the offensive, Libyan leader Muammar Gaddafi is always surrounded by his female bodyguards, also known as his Amazonian guard. Or, sometimes, his revolutionary nuns.
Since the early 1970s, an eye-popping cadre of 30 women have shadowed and at times taken bullets for the man who is today, at 68, the Arab world's most senior dictator.
The women pledge oaths of loyalty to Gaddafi, including a vow of virginity, according to reports. The female bodyguards are not just for show. In 1998, one died and two were injured when Gaddafi was attacked.
It’s a dangerous job and yet for most of the four decades that they have stood by Gaddafi, they have seemed as much his statement on style and gender politics as his security detail.
Decked in 1990s-style camouflage, nail polish, thick mascara, and Nancy Sinatra warboots, the nuns flank this flamboyant world leader who packs Bedouin tents and home-tailored boubous whenever he travels abroad.

Download Trillian Astra 5.0.0.35

Trillian is a fully featured, stand-alone, skinnable chat client that supports AIM, ICQ, MSN, Yahoo Messenger, and IRC. It provides capabilities not possible with original network clients, while supporting standard features such as audio chat, file transfers, group chats, chat rooms, buddy icons, multiple simultaneous connections to the same network, server-side contact importing, typing notification, direct connection (AIM), proxy support, encrypted messaging (AIM/ICQ), SMS support, and privacy settings.

Without stealing your home page and with no other included software, pop-ups, or spyware, Trillian provides unique functionality such as: