Entries by grace

FREE ENGLISH LEARNING TOOLS

For most people, it’s easy to lose motivation after the initial excitement of starting something new. Learning a language is no different. However, there are plenty of free tools you can use to get back on track to achieving your English learning goals. We’ve developed our own tools with this in mind.

Street Lighting Comparison

Introduced circa 1970, High-Pressure Sodium (HPS) lights have remained a popular street lighting solution. Despite their widespread usage, however, HPS lamps display numerous deficiencies, particularly when compared with newer lighting technologies. HPS streetlights gained widespread acceptance solely for this reason: They generate the greatest amount of photopic illumination (visibility in well-lit environments) while minimizing power […]

Energy Star And LED Quality

As with appliances and electronics, ENERGY STAR-certified LED lighting products are known for their unsurpassed efficiency. But what is it about this government-backed designation that promises such exceedingly high performance? Let’s begin by clarifying the term ENERGY STAR. Established in 1992 by the Environmental Protection Agency (EPA) and the Department of Energy, ENERGY STAR is […]