To measure the amount of the grow light inside the grow tent, use aPAR Meter. Measuring light is important to ensure the optimal PPFD values to make plants thrive and yield. Using a PAR meter shows how much energy the grow light gives off and what lands on the plant. The optimal range ...
though both types of light meters measure reflected light. The H-H LM can measure the light falling on a subject (the incidental light) or the light being reflected off an object. The H-H LM can have an extremely narrow field of view (sometimes as little as 1 degree), which ...
Why measure employee engagement? You might have a strong human resources (HR) program in place that gives you an overview of your employees’ journeys— from onboarding to exit interviews— but is that program up to date and measuring the right experiences? Keeping it relevant and working for...
We know that dark skies are ideal for astrophotography. However, with the excessive use of outdoor light at night, the majority of astrophotographers are having to learn how to deal with heavy amounts oflight pollution. For this reason, you might be interested in learning how dark your backy...
What is a light-year? Alight-yearis the distance that light can travel in one year — about 6 trillion miles (10 trillion kilometers). It's one way that astronomers and physicists measure immense distances across our universe. Light travels from themoonto our eyes in about 1 second, which...
First of all… Lumens per square foot or a foot-candle or lux is the amount of light an area is receiving. To do this calculation, you have to: Measure your room’s dimensions. E.g. 10-by-10 feet. Calculate the total sum of the lumens produced by all of your light sources. Lumen...
HOW TO MEASURE LIGHT.The article offers information on the terms used to refer to the amount of energy it takes to produce lighting which include watts, Guide Numbers, and lumens.EBSCO_AspPopular Photography
Focal point/focus - point at which the light from a lens comes together Magnification - product of the magnifying powers of the objective and eyepiece lenses Numerical aperture - measure of the light-collecting ability of the lens Resolution - the closest two objects can be before they're no ...
Seeing your progress is really important to boosting your morale and helping you to keep motivated Sometimes, simply studying itself can be an activity which isn’t always easy to measure. But if you keep track of all the tasks you’ve completed, you’ll have a much better idea of progress...
it is much easier and more accurate to use ahandheld incident light meter. You see, your in-camera meter takes a measurement of the light reflecting off your subject – whereas a handheld meter can measure the amount of light fallingonyour subject and therefore gives you a more accurate valu...