A lumen measures the amount of light that comes from a bulb. It refers to a light bulb’s brightness, intensity of light and visible light emitted. A standard 40-watt (40W) bulb is equal to 400+ lumens. Typically, the higher the wattage, the higher the lumens, and the more light output.Read More →
Bright Angel Trail is considered the most popular hiking trail in the park. Well-maintained and graded for stock, it is fairly easy to walk down. … The return hike back up and out of the canyon is far more difficult and requires much more effort. Plan for at least twiceRead More →
Daylight is a very bright white-blue light with a very high color temperature in the range of 5000 – 6500 K. … Soft White produces a yellow hue and a lower color temperature in the range of 2700 – 3000 K. Remember, the higher the Kelvin value, the brighter theRead More →
It can be a long walk, can be a short walk, it is ALL up to you how far you go. BUT, understand, it can be a difficult walk as you are about 6000 feet up in the air and the path is about 6 feet wide with NO guardRead More →
Reservations/permits Fill out the backcountry request form and mail or fax it to the backcountry office (considered four months out). Visit the backcountry office and get a permit in person (considered for start dates one to three months out). Can you camp at the bottom of Bright Angel Trail? BrightRead More →
Seasonal Challenges appear at the top of your Quests page, and hovering over each one shows its requirements and how much Bright Dust and XP it rewards. The bigger the XP payout, the more Bright Dust you’ll earn with it. As a bonus, completing 75 Seasonal Challenges will reward youRead More →
Brightfield imaging is most suitable for observing samples with strong absorption. Darkfield imaging provides good contrast for subresolution features, since it only captures high-angle scattered light. What is an advantage of using phase contrast or dark field microscopy instead of bright field microscopy? Advantages of phase contrast microscopy: It isRead More →
Bright Futures eligible 2008-09 high school graduates and earlier: May use summer term grades/hours for a ONE-TIME ONLY restoration of award eligibility, unless a previous restoration has been used. Can I take a semester off and keep bright futures? Can I take a gap year? A: Yes, but you mustRead More →
Why is Venus so bright this week? Venus is always the third-brightest object in the sky behind the sun and the moon, and it’s always brighter than the brightest stars. However, because it orbits relatively close to the sun, it’s only ever visible for a short time after sunset orRead More →