The perfect Remote, Programmable, Controller for interactive LED strips | O Since when white light emitting high brightness LED are available, the handover from traditional lighting bulbs to the solid-state lighting has become irreversible: LEDs have an efficiency (expressed in lumens/watt) higher than that of almost all the traditional lamps (except, at the moment, the large sodium vapor lamps used for street lighting, unusable in closed environments for the high power required and the chromatic aberration they produce) at a cost that is today less prohibitive than it was a few year ago. They are indeed very sturdy and have a very acceptable ratio of luminous flux and size. In common with the traditional lamps, at least with fluorescent and neon, white LEDs have the characteristic to be produced to emit, depending on the model, a shade of white that ranges from warm (3,000 K) to cold (over 6,000 K). Receiver diagram Before proceeding, it is better specify that the output OUT1 (i.e. R1: 1 kohm R2: 1 kohm R3: 4,7 kohm R4: 470 ohm R5: 4,7 kohm R6: 4,7 kohm

How to make a "perfect" solar absorber The key to creating a material that would be ideal for converting solar energy to heat is tuning the material's spectrum of absorption just right: It should absorb virtually all wavelengths of light that reach Earth's surface from the sun—but not much of the rest of the spectrum, since that would increase the energy that is reradiated by the material, and thus lost to the conversion process. Now researchers at MIT say they have accomplished the development of a material that comes very close to the "ideal" for solar absorption. The material is a two-dimensional metallic dielectric photonic crystal, and has the additional benefits of absorbing sunlight from a wide range of angles and withstanding extremely high temperatures. Perhaps most importantly, the material can also be made cheaply at large scales. Most of the sun's energy reaches us within a specific band of wavelengths, Chou explains, ranging from the ultraviolet through visible light and into the near-infrared.

Volcanic lightning storms are creating perfect crystal balls - ScienceAlert Scientists have discovered tiny, perfectly round spheres of glass in the ash left over from volcanic explosions, and say they could be the key to understanding how and why lightning forms in these crazy-volatile events. The team, led by volcanologist Kimberly Genareau from the University of Alabama in the US, examined the ash from two massive eruptions - the 2009 Mount Redoubt eruption in Alaska, and the 2010 Eyjafjallajökull eruption in Iceland - to find glass balls measuring just 50 microns across (a micron equals 0.001 millimetres). Researchers have known for years that volcanic eruptions produce tiny, jagged fragments of glass, but the consistent shape and smooth surface of these spheres came as something of a surprise. This lightning could be the key to creating the spheres, says Becky Oskin at Live Science, because they heat the air within the ash clouds to temperatures of around 30,000 degrees Celsius (54,000 degrees Fahrenheit), within mere millionths of a second.

4 Tips for Finding the Perfect Co-Founder Q: Where and how do I find the right business partner? -Sharita Gopal A: Founders often say that starting a company can feel like the loneliest journey in the world. You have Herculean milestones, difficult decisions and late nights in the office, all making the path to success a difficult one. Calling it a “burden” would be an understatement, which is why investors often prefer teams with co-founders to share the responsibility and stress. But it’s not always easy to find someone who shares your vision and work ethic, while also balancing out your skill set. That being said, here are a four tips for finding someone to take the entrepreneurial journey with you. 1. It’s about the execution and figuring out what works and doesn’t work, which comes from the team and customer feedback. Related: A Guide to Matchmaking Sites for Co-Founders 2. Once you’ve reached a point where you’re collecting real data and metrics, then you can analyze your findings. 3. Leverage their network too. 4.

Dyson Finally Perfected the Vacuum By Eliminating the Need For Filters BBC - Travel - The perfect trip: Norway Traverse Norway'­s dramatic landscape in this ideal excursion, taking in one of the world's great rail journeys from capital Oslo to the historic port of Bergen. Venture on to sail the unspoilt islands of Solund, before gazing in wonder at the awesome views of the mighty Aurlandsfjord and Hardangerfjord. Oslo to Bergen Railway: Best for rail adventures The train pulls out of Oslo Central Station and begins its journey west. With the passing miles, the city’s stern-looking apartments and office buildings dwindle, and the landscape softens into farmland, broad and green in the mid-morning light, punctuated with clapboard farmhouses painted red and mustard-yellow. The Oslo to Bergen railway is one of the world’s most scenic journeys, stretching 308 miles through some of Norway’s most spectacular landscapes. Related article: Driving Norway’s Golden Route At Finse station, passengers climb down to the platform with packs and sturdy boots, their breath visible in the cold mountain air.

The Secret to Landing the Perfect Consulting Gig for You | The Muse There are a lot of things that play into getting a job in consulting, from writing a great resume to acing the case interview. But one of the most important—and often underestimated—aspects is taking the time to get your foot in the door by connecting and networking with potential employers. Because most management consulting candidates are stars, relying only on a strong GPA or solid resume may not give you the best competitive advantage. Not sure where to start connecting with consultants? 1. While you might think that attending formal information sessions is just a way to waste an hour listening to company propaganda (that, let’s be honest, you could read online), think again. But the best benefit of showing up? (Note: Information sessions are typically focused on recruiting new graduates and held on campuses, but they can sometimes be open to those who are mid-career. 2. For post-grads, volunteering may be the best way to connect and get involved in events. 3. 4. 5.