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Why are fluorescent globes more energy efficient than incandescent?
Wiki User
∙ 12y ago
Well, you would basically have to have a thorough understanding of how each one works. But basically, the incandescent lightbulb converts electricity to heat first, and a lot of energy is radiated away in the form of invisible infrared light; this is the reason it is very inefficient.
Wiki User
∙ 12y ago
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Is their energy in a snowglobe?
What an interesting question! Most snow globes are fairly simple, with a glass globe, liquid, an interior scene or artwork, something to float in the liquid and a sealant to keep the liquid inside the globe and base. The "energy" would mainly be from shaking the snow globe -- a person picks it up, and shakes it, and the movement of the liquid will cause the glitter or "snow" to swirl and shake as well. The energy in this case is the pull of gravity, slowly bringing all moveable parts back to the bottom of the globe. Some fancy newer globes do add lights, or fans, or mechanical pieces to move the liquid/snow and to create special effects. However, the vast majority of snow globes have energy only in the way that a glass of water contains energy.
How is physical model different from mathematical model?
A mathematical model is made up of mathematical equations and data. These models allow you to calculate things such as how far a car will travel in an hour or how much you could weigh on the moon. Physical models are models that you can touch. Toy cars, models of buildings, maps, and globes are all physical models.
How do humans maintain their body temperatures?
In humans, the activities of our cells use energy and produce heat as an effect (kind of like light globes producing heat as well as light). Then that heat is passed into the environment by our wastes etc. (they're hot), or it just radiating off (eg. when you can feel the heat of another body, they're losing heat!). When we get cold, we can also shiver. The reason for this is that the increased amount of contractions of the muscles (cells) also increases the heat produced in the method mentioned at the start of this (very long) answer (haha). The same applies for when we exercise: More cell activity=more heat. We can also gain heat through the sun, or anything else that feels hot. That means that when you feel heat, that heat is passing into your body. It also works in reverse: When you feel something cold, it's taking heat from you. Hope I helped :) I do (yr 11) human biology and physics :p
What is the force exerted on an object by gravity?
The force due to gravity is usually measured by a device called the Atwood machine, basically a pulley system with two unequal weights on both sides. By measuring the time it takes for the masses to fall a certain distance, the gravitational force can be calculated. Other ways to calculate the force of gravity is the simple spring system that reciprocates the force of gravity, and knowing the distance displaced the force could be calculated, but this is less accurate than other methods. To solve for the force gravity exerts on an object, you multiply the mass of the object in kilograms * g g = acceleration of gravity = 9.8 m/s^2
Are fluorescent lights cheaper to run then incandescent globes?
Yes, they use less electricity.
What light is more energy saving?
Compact fluorescent light globes.
Can you make normal lights into black lights?
If your light is a fluorescent light, then yes - this is the most effective for black lighting. You can also purchase "Black Light" incandescent globes, however, I don't believe these to be anywhere near as good. If you have a "standard incandescent globe" socket, I would suggest you purchase a CFL black light as these give a better effect and are more efficient. For more info, see the discussion on this question.
Myths and Facts About Fluorescent Lights?
Fluorescent lights are an excellent choice for home, office, and school environments because they offer many benefits. Still, some myths persist that cause consumers to question the use of fluorescent bulbs. Here are the facts about this type of lighting. Myth: Fluorescent lights flicker, causing eye strain and even headaches. Fact: It used to be true that fluorescent lights had an annoying flicker, accompanied by a slight buzzing noise. Improved technology has eliminated these drawbacks. New fluorescent bulbs use an electronic ballast that produces a steady, silent light. Myth: Fluorescents are more energy-efficient than incandescent bulbs, but less efficient than halogen lighting. Fact: Compact fluorescent lights are almost three times more efficient than halogen bulbs (and more than ten times as efficient as incandescent bulbs). Moreover, fluorescent lighting doesn't consume any power when it is switched off. Halogen bulbs, in contrast, utilize transformers that can continue to consume power even when the light is turned off. Myth: Fluorescents are bad for the environment because they contain mercury. Fact: Fluorescent bulbs do contain a small bit of mercury, which means that they must be discarded in a responsible manner. However, not using fluorescent lights will result in even more mercury being released into the environment. This is because other forms of lighting consume more electricity, which is generated at this time mostly through the burning of fossil fuels. This produces power plant emissions containing mercury. The best way to reduce mercury in the environment is to burn fewer fossil fuels by using fluorescent lighting wherever possible. Myth: Fluorescent light bulbs won't fit inside certain light fixtures, such as the ceiling globes used in many factory-built homes. Fact: Again, this used to be the case, but the advent of the compact fluorescent light bulb changed everything. Today's fluorescent bulbs are smaller than a standard incandescent bulb and will fit in any lighting fixture designed for incandescent bulbs. Myth: You can't use fluorescent bulbs with dimmer switches. Fact: You can use dimmer switches that have set levels such as bright, brighter, and brightest -- as long as they are wired for fluorescent bulbs. However, continuous dimmer switches are still not used with fluorescents.
Which is more efficient 12v or 240v downlight?
If they are both using the same watt globes the 240v is slightly more efficient due to small losses in the transformer.
Does wasting energy cause global warming?
Wasting energy contributes to global warming, because greenhouse gases are emitted by the generation of that energy whether or not you use it wisely. Turn off appliances that are not in use; replace incandescent light globes by high efficiency ones, use the air conditioning less, or raise the temperature by one or two degrees in summer.
How do you use the Word globe in a sentence?
The modelers made a replica of the earth by making a globe with the earth's physical features.
What is the lumen output for a 35W halogen?
It varies from about 600 to 1100 lumens. Typically the higher the lumens output, the shorter the lifespan of the globe. Have a look at this list of globes for purchase whih shows wattage and lumens: http://1000bulbs.com/category/75-watt-incandescent-standard-shape-light-bulbs/
What is the difference between the normal light globe and a fluorescent tube?
"Normal" light globes use a glowing filament, heated by the current. Flourescent tubes ignite a gas within a tube, using an arc.
What is a Compact Fluorescent Lamp or CFL and how does it work?
A 3-way incandescent bulb works by having two separate filaments for the first two levels of brightness. For example, a 30-70-100 bulb will have a 30 watt filament and a 70 watt filament. The 3-way switch then turns on either the 30, the 70, or both - giving the 100 watts full brightness. (This is why a 3-way incandescent bulb usually burns out the most commonly used brightness level first.) A 3-way compact fluorescent, using the same simple 3-way switch, will either have two separate fluorescent tubes, one for each of the first two brightness levels (unlikely), or it will adjust the brightness electronically through an internal voltage (or other) adjustment based on which position the 3-way switch is set at. This is only an approximation - additional details would be interesting.
What is the fear of globes?
Cheezaphobia is the fear of globes.
What are some businesses that sell floor globes?
Some businesses that sell floor globes include World Globes, Only Globes and Ultimate Globe. Businesses such as Amazon and eBay also sell floor globes.
