Fraunhofer tests an LED lamp that will light up your PC at 3 Gbps

This would be really great! it opens unlimited possibilities!


When you think about broadband connections, you usually picture radio airwaves or wires, not ambient light. But the emerging field of LED broadband (sometimes dubbed Li-Fi) aims to turn your light bulbs into data transmitters by subtly manipulating the rate they flicker. One of the organizations researching such optical communications technology, Germany’s Fraunhofer, has hit a new milestone: a lighting system that could deliver up to 3 Gbps.

Fraunhofer’s Heinrich Hertz (yes, that Hertz) Institute said it has developed components in the lab that will allow off-the-shelf LED lights to transmit data at a rate of 1 Gbps on a single frequency. Since most commercial LEDs support three frequencies (or colors) of visible light, that gives the system a total capacity of 3 Gbps.

The institute has achieved this, in part, by expanding the size of each frequency transmission band from 30 MHz to 180 MHz. Basically, Fraunhofer has developed…

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How do teachers use technology?

Teachers belong to the previous generation.

Blandin on Broadband

Pew Internet and American Life recently published a report on How Teachers Are Using Technology at Home and in the Classroom. The good news is that teachers seem to be using technology…

Asked about the impact of the internet and digital tools in their role as middle and high school educators, these teachers say the following about the overall impact on their teaching and their classroom work:

  • 92% of these teachers say the internet has a “major impact” on their ability to access content, resources, and materials for their teaching

  • 69% say the internet has a “major impact” on their ability to share ideas with other teachers

  • 67% say the internet has a “major impact” on their ability to interact with parents and 57% say it has had such an impact on enabling their interaction with students

I was surprised how many use phones in the classroom…

  • 73% of…

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