Our eyes are not very good at determining how much light is present, we as humans use light as a tool to perceive things. Plants on the other hand use light as a source of survival, they get their energy from it. To test your eyes, you can make the room dark and let your eyes get used to it. You will immediately notice that the longer you are in the dark, the more you see. The room does not get lighter but your eyes adjust. Nature has arranged this for us so that we can still see enough at night and throughout the winter when everything is a lot darker. DIFFERENCE BETWEEN PLANT AND HUMANOur eyes and the cells of plants that absorb light are not only different in the adaptability but also in sensitivity to the light spectrum. Special grow lights can seem quite dark in light intensity to us, while the plant can just absorb a lot of light from them. The visible light spectrum consists of light with a wavelength between 400 and 700 nanometers. This is the light spectrum that both humans and plants are sensitive to. The light waves are made up of light particles (fotones) & these move in the motion of a wave. The speed of this movement determines the radiation, the higher the number the slower the movement. So 700nm is slower than 400nm. A light source like a lamp or the sun emits these wavelengths. When this beam hits an object it is reflected or absorbed. White bounces back just about all light colors while black absorbs them. So when we see an object as green it means that all light waves are absorbed except the green ones. So for plants the light waves that disappear in the leaf are important while for us the reflection in the world around us is important. (ONLY IN DUTCH) You can read more about how our eyes capture light here: https://www.foodplanting.com/2018/10/24/licht-en-planten-waarom-onze-ogen-niet-kunnen-zien-hoe-donker-het-is-voor-een-plant/ |
AuthorCrazy plant lady who likes to inspire others! Everything I write here comes from my own experience, knowledge that I gained by reading books and on the internet. If I would literally copy someone's info, I would do my best to link it of course! Do you spot typos or do you have other concerns, let me know! Have fun reading! I've only just started writing English blogs since January 2021, that's why there are many Dutch blogs and not so many English ones.
I use DeepL to help me translate. ARCHIVES
Maart 2022
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