Over time, the heat produced causes the filament to grow thinner. This causes the light bulb to grow dim.
he planted it, because he's a very non intelligent person.~
Visible light consists of a number of wavelengths. Blue light is the most energetic, red light the least energetic. Green plants grow best in red or blue light (sunlight is a mixture of wavelengths) and do not grow in green or yellow light. Light intensity will affect the growth of plants. Laser light (high intensity with very narrow wavelength) can be used to cut and obviously hurt if used incorrectly. Some people are photo sensitive and light can cause them pain. Green plants are photo sensitive and will grow towards the light.
use a small battery, nine volt or six...make sure you have the proper bulb for the max. voltage. Split a common pencil to expose the grafite core. One wire taped to the exposed end of the pencil and to the battery. To the other post of the battery connect a second lead. By sliding the second lead back and forth on the surface of the pencil the bulb will grow brighter and dimmer based on proximity to the other lead (taped to the end of the pencil)...or replace the pencil with an old door spring. It will work in a similar fashion. Low voltage, no danger, good presentation of electrical resistance. Appropriate for middle school students to do.
i think it's plants. plants are stimulus to light ans as a result always grow in the dierction of light...
Seedlings typically bend toward light in a phenomenon known as phototropism. Of the options provided, the seedling that is most likely to bend toward the light is the one with the geotropism. Geotropism is the response of a plant to gravity, causing its roots to grow downward and shoots to grow upward, steering away from the light source.
a regular light bulb-no.
Only if you buy a "full spectrum" of "grow light" type of compact bulb.
Yes you can use it.
Definitely fluorescent. Incandescent lights are extremely inefficient and spend most of their energy producing heat rather than light. This is why an incandescent lightbulb gets so much hotter than a fluorescent one.
Depends on the plant some grow better in darker places but if it needs light go with the sun it's free
It's about 600 lumens. The same brightness comes from a 12 Watt compact fluorescent light (CFL).
I'm sure you can on the internet :)
One nice thing about light bulbs is that they provide light indoors and when it is dark outside, without having to light a candle or an oil lamp. They are also relatively safe, clean and easy to operate. Disadvantages include the fact that you will need electricity and wires that are properly installed and cannot be easily moved about. It is also difficult to repair a broken light bulb or one that has burned out, and they must be disposed of and replaced.
Grow lights are more efficient for plant growth because they emit specific wavelengths of light that are optimal for photosynthesis. Incandescent lights produce a lot of heat and not enough of the red and blue light that plants need, making them less effective for promoting plant growth. Additionally, grow lights are designed to provide a balance of light spectrums tailored to the different stages of plant growth.
Explain why light is essential for a plant to grow
By studies, plants grow underneath natural sunlight better.
Actually, light from certain lamps does help plants grow. In almost any garden shop, you can find germination kits that include little containers for the seedlings and a special bulb that helps grow the seedlings. In extreme cases, seen often on the news, marijuana growers actually grow entire "fields" of plants indoors using Grow Lights. Right now, in many of the catalogs you see like Brookstone etc., there's a new product that's designed to grow herbs for the kitchen?and it also uses a special Grow Bulb (and hydroponics) to achieve this. The trick is to have a bulb that covers the correct spectrum of light!