Download: Download full-size image Fig. 2. Emission spectra of the light sources analyzed. A), spectral irradiance of the sun on July 2nd, 2019 from 9:00 to 15:00, B), spectral irradiance of visible lamps C), spectral irradiance of cell phones and tablets. D), spectral irradiance of ...
Light-emitting-diode lamps are widely used because of their long lifespan and excellent electric efficiency. Recently, LED light sources were introduced in several vitrectomy machines for endo-illumination of the retina1. Despite the several advantages of LEDs, many researchers have reported that ...
Understanding these phenomena is increasingly important as the light from modern lamps, such as LEDs, typically contains a greater percentage of blue light, making them more biologically effective, and the use of devices that emit artificial light (e.g., smartphones) becomes more pervasive4,26,...
So many benefits. Full Color Dynamic Effects Smart Bulb Full Color Direct Connect Smart Bulb Features Experience the smart benefits Control with your voice Pair your Smart Bulbs and Light Strips with a smart assistant—like Amazon Alexa or Google Assistant—for hands-free voice control of your li...
On the night of Diwali, the houses, temples, streets, shops and offices get illuminated with an array of oil lamps. All these lights eliminate darkness, and the prayers and celebrations create an atmosphere of love, happiness, purity and compassion. In many areas in India, Diwali is a ...
treatments such as ultraviolet light as a physical means to reduce pathogens have been extensively studied in liquid foods. The disinfection effects of UV treatment using a wide range of wavelengths produced from different sources (e.g., mercury lamps, excimer lamps, microwave lamps) on liquid foo...
Each lamp only cost ＄20.However,this was a lot of money to many villagers,so Evans made sure he kept the cost down.He used recycled materials and ask volunteers to build the lamps.Finally,people from many countries gave away money to his team,so the lamps were u...
(10 hens in each cage as a replicate). UVB-LED lamps installed under the feed troughs were used to provide UVB light (296–316 nm) for the birds in the three treatment groups (1 h, 2 h, and 3 h UVB supplementation per day, respectively), while the control group was not exposed ...
Don't forget the African continent, where many people use oil lamps for lighting. Best wishes. Sandy opengreenenergy(author)6 years ago Flag Not nice Inappropriate SpamReply Thank You. Amu0806 years ago Flag Not nice Inappropriate SpamReply Hello,I am working in a technical college,and I ...
Intense terahertz (THz) electromagnetic fields have been utilized to reveal a variety of extremely nonlinear optical effects in many materials through nonperturbative driving of elementary and collective excitations. However, such nonlinear photoresponses have not yet been obeserved in light-emitting diodes...