Metamerism is when two materials show the same color under one light but display different colors under another.
Picture this: you’re at the grocery store, eyeing the chicken fillets on the shelf. The meat looks fresh and pink, but when you place it in your cart, something strange happens—the color transforms into a more yellowish, bland hue. Intrigued, I decided to investigate.
PAR meters are used to measure light from the Sun or Grow Lights to ensure agricultural plants are receiving enough light for health development and growth.
Our users ask if the distance between your meter and the light source should be considered when measuring your light. It depends on what you are measuring.
Greenhouse and horticultural professionals encounter various terms related to light measurement. This article discusses PAR, PPF, PPFD, and PFD. These terms have been used interchangeably in literature and can confuse. We want to clear this up once and for all.
Chlorophyll, besides water, is perhaps the most essential molecule for life on this planet. Everything that we eat, everything that sustains us is derived from this mighty molecule.
Cosine Correction is a term often encountered when working with light meters. In this article, we aim to explain this term by addressing everything you wanted to know about Cosine Correction.
Plants use light for photosynthesis, but there is another aspect to light that is important for plants – it’s called Photomorphogenesis, or how plants use light to grow and change form.
What is photosynthesis? For many, it’s something we’ve learned or heard about, but the details have escaped us over the years. So, we thought it might be helpful to review the salient points and terminology of this amazing process for you.
Introduction - Clinical Lighting and Cyanosis Inadequate lighting in medical settings can impede a vital visual diagnosis of the skin, called Cyanosis. So in this article we will discuss a crucial...
The Flicker Handbook
Everything thing you need to know about Flicker, an insidious, potentially serious lighting artifact impacting visual safety for public places like hospitals, offices, libraries, and more...
United Power Research and Technology
UPRtek (est. 2010) is a manufacturer of portable, high-precision light measurement instruments; Handheld Spectrometers, PAR meters, Spectroradiometers, Light Calibration Solutions.
UPRtek HQ, R&D and manufacturing are all based out of Taiwan, with Worldwide representation through our certified Global Resellers.
Imagine you’re at a department store and find a shirt and pant combination. Despite being from different brands, they have perfectly matched colors. However, when you return home and try them on, you’re annoyed to find that the colors are slightly different. We explain all about metamerism, from big picture to essential details.