The Silverlight platform, which competes with Adobe Flash, features the animation, vector graphics and audio-video playback that characterise rich internet applications. Silverlight 3 offers more than 60 controls for improved graphics, animation and 3D features, including full support for high-definition video in full-screen mode and stutter-free live and on-demand video.
The new platform also expands the number of supported media formats, including H.264 for HD content, as well as enhancements such as deep linking to improve navigation through content and to automate search engine optimisation.
Silverlight 3 also promises to help developers create lightweight web applications that can exist outside the browser, giving users the potential to use them online and offline in a variety of environments.
"In the short time since we launched Silverlight and Expression Blend, Microsoft has rapidly introduced new features and functionality that enable customers to deliver outstanding web sites," said Scott Guthrie, corporate vice president of the .NET Developer Platform at Microsoft.
"We are working closely with the community to deliver software that helps businesses provide customer experiences on the web that go beyond 'good enough' and drive real business results."
Several components of the Microsoft Web Platform were also announced at the show, including an integrated set of tools, servers and frameworks that work seamlessly together and interoperate with popular open source applications and products used in the community.
The company also announced details about Expression Blend 3 Preview, and updates to the Azure Services Platform.
New light-guiding nanoscale device can control and monitor a nanoparticle trapped in a laser beam with high sensitivity
Optical traps are scientific instruments in which a focused laser beam is used to exert an attractive or repulsive force on a microscopic object to hold it in place
Scientists estimate that the exoplanet has already lost up to 35 per cent of its mass over its lifetime
The observations were made using the Atacama Array in the Chilean desert
J1043+2408 was observed for more than 10 years, and its radio light curve exhibited a periodic signal repeating in about 563 days