Asked in Care of FishFreshwater AquariumsBlack HolesBacteria
Care of Fish
How do black light uv kills algae?
Asked in Physics, Environmental Issues, Earth Sciences
What effect does a high level of UV light have on phytoplankton?
Asked in Water Fountains and Ponds
What is the best way to clean green pond water?
Asked in Energy
When there is no light why do we see a black light?
Asked in Black Holes
Why aren't black lights black?
Black as a color would absorb all visible frequencies of light. A "black light" is not actually black, but rather emits most of its light in the ultraviolet frequencies. This light is invisible to our eyes except that it interacts with certain materials that fluoresce (glow in the dark) when they absorb UV light. These lights are also used for indoor plants that need UV light to grow.
Asked in Oceans and Seas, Biomes, Ozone Layer
How does depletion of the ozone layer effect bluegreen algae?
Asked in Botany or Plant Biology
What do green plants algae and some bacteria need?
Asked in Science, Visible Light Spectrum
Does a UV wavelength of 395-410 nm work as an black light?
Asked in Physics
Why do some materials glow in ultraviolet - UV - light?
Does algae grow in the photic or aphotic zone?
Algae is a plant, therefore it needs light. The photic zone has light, so that is where algae will grow. actually algae are of diffrent types red, brown green and yellow. Green algae and brown algae(stipe and frond) are usually in photic zone however red algae and bluegreen algae also inhabit aphotic zone On account of presence of pigments r-phycocyanin and r-phycoerythrin red algae can also absorb diffused UV light so can also prepare food in aphotic zone
Asked in Electronics
Do black lights have neon in them?