ultra-white version of OSRAM's TOPLED
LED has an efficiency of 76 lm/W at an operating current of 120 mA. Color space
coverage is up to 100 percent sRGB, depending on the color filters used in the
display. A specially optimized phosphor is used as conversion material to
ensure high stability of the white point over time and across a wide
temperature range. OSRAM also offers a multi-white version that achieves 67
lm/W for the same operating current, and covers up to 120 percent of the sRGB
color space. Both versions measure 5.6 x 3.0 x 0.9 mm in size.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.