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How many hours of light is required for long and short day lighting?
Wiki User
∙ 15y ago
* The amount of lighting varies by plant type. However, a general rule would be more than 12 hours of darkness for short-day plants, less than 12 hours of darkness for long-day. while the above answer may work as a rule of thumb it is far from accurate. the term long-day or short-day is not a specific number of hours even if you are looking at the same plant variety or even the same plant itself. the term is relative. a shift to longer nights (resulting in shorter days) which happens in winter will signal to a short-day plant to bloom and the other way round for long-day plants. note i pointed out the lengthing or shortning of the dark period relative to the light period as the signal. zaf.
Wiki User
∙ 15y ago
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Front lighting.. back lighting.. cross lighting and down lighting are all terms used to describe?
Short answer: Angle. Let us assume we are illuminating a human on a theater stage. Front lighting are the fixtures that point to the front side of the human when they are standing towards the audience. Back lighting is the opposite. That means the light fixtures which are pointing to the back of the human. Cross lighting is when two, or more, lighting fixtures point at the human from varying places. For example, if there's both, front light and back light, those can be considered as cross lighting. Also, to illuminate the front side of a human completely, you usually need at least two lighting fixtures for that, one slightly to the left and one slightly to the right side of the human. This is also called cross lighting. Down lighting is light coming from up (ceiling) and going down. This is as opposed to up lighting, which is when a light fixture is on the floor, pointing upwards. Generally, most of theatrical lighting comes from up, thus being down lighting, but for a special effect, down lighting can be used too.
Can lighting short out a car battery?
The car light? YES! Leaving your car light on WILL make your battery run out. Things like leaving your car door open if the light is on because it is open will cause the lgiht to Mae your car battery run out. There is a big difference between shorted out a car battery and running the battery down. Lighting in itself won't short a battery out but will run it down.
What does home safe lighting mean?
Home safe lighting is a feature on cars where when activated main beam will come on for a short period of time. Thus giving you light to get to where your going after you exit the vehicle. Ie to your front door.
What does short and long day means?
"Short day" and "long day" refer to the duration of light and darkness in a 24-hour period. In horticulture, the terms are often used to describe the amount of light needed for a plant to flower. Plants that require short days will flower when exposed to fewer hours of light, while those needing long days will flower when exposed to more hours of light.
What does safe light mean?
Home safe lighting is a feature on cars where when activated main beam will come on for a short period of time. Thus giving you light to get to where your going after you exit the vehicle. Ie to your front door.
Why lighting affects space rockets?
Lighting affects rockets because they conduct electricity and get short sircuited
What is the difference between the flash and continuous lighting and why not using continuous lighting for photography?
Continuous light is just what the name implies, light that is on constantly. There are a few kinds of continuous light, tungsten, fluorescent, HMI and LED are the most common. It would take a pretty detailed conversation to explain lighting in detail but here's a short answer. What matters is the source of the light and how it is modified. A direct flash can be very hard but if it is bounced into an umbrella it becomes soft. A fluorescent light is soft by nature and can be diffused further. If you have the money to get the right lights, you can get great light from almost any light source. It all depends on what you want to accomplish. The clarity depends on the quality of the light you are using. If you state what you want to do then it is easier to give you advice on what kind of light to get.
What is flashlight?
Flashlight for short, is a hand-held electronic lighting tool. A typical flashlight has a battery-powered light bulb, a focusing mirror and a handle housing for hand-held use.
What is a flashlight?
Flashlight for short, is a hand-held electronic lighting tool. A typical flashlight has a battery-powered light bulb, a focusing mirror and a handle housing for hand-held use.
What does LCM mean in driving?
That's short for Lighting Control Module.
Why doesn't every place on Earth have 12 hours of light and 12 hours of dark?
some places are closer to the equator. In kenya(very close) to equator the days are very short
What is the short form of Required?
req.
