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Specifications:
- With innovation design, this mini LED pocket light can be put into wallet
- This mini LED pocket light is very compact and as small as a credit card
- It is quite easy to use -- fold "LED light bulb" up, light turns on, then, flatten it to switch it "OFF". No wiring is needed
- The portable lamp is ultra-thin, super light, and easy to carry
- The small night light with LED as light source, and the size of it is as small as the bank card
- Creative gift choice for your friends with this LED card light
- Electronic part of the high-capacity lithium battery
- Product Use: Advertising, lighting, jewelry, ornaments, gifts, brand marketing, and more
- Size: 8.5 x 5.5cm / 3.35 x 2.17in (L x W)
Details:
- The pocket light is as small as a credit card, so it is easily to put into wallet
- The portable lamp is easy to use, when the card is fold, the light will turn on
- The package of this pocket light is perfect, which can protect it from hurt
- This mini LED credit card lamp with the unique design will the best choice for green life
- With the high-capacity lithium battery, the credit card lamp can work well in the night
How Does a Night Light Work?
- The Basics: A night light is a small, low-power electric light kept on at night for comfort and safety. They provide enough light to see the outlines of objects in a room, but are dim enough to not disturb your sleep. Night lights are often used to comfort children who are afraid of the dark. They can also be used in hallways and bathrooms to allow people to navigate the house at night
- Simple Night Lights: The simplest night light is a small plug-in device with a low-watt incandescent bulb and a mechanical switch. The switch works like any wall switch, connected to wires that complete an electrical circuit. It turns the light on and off
- Automatic Night Lights: Many modern night lights are designed to turn on automatically when it gets dark and turn off automatically when it is light again. They use a detector called a CdS cell. A CdS cell is a type of resistor called a photoresistor. Resistors resist the flow of electricity. Photoresistors differ from other resistors in that they change when light shines on them. When light shines on a CdS cell, it decreases the resistance. The night light has a detector circuit which automatically turns on the light when the resistance reaches a certain level. High resistance means that there is no light shining on the CdS cell, so the night light turns on
- Efficienct Night Lights: Incandescent light bulbs are very inefficient. Since they work by heating up a wire, most of the electricity they use is turned into heat energy instead of light. Some modern night lights use light emitting diodes, or LEDs instead. In LEDs, electrons are forced to jump a gap between two different materials. When the electrons jump the gap, they release a little bit of energy in the form of a photon of light. LEDs make very little heat, which means they waste very little energy
Night-lights & Sleep
While it is not unusual to see a night-light in a child's room, they are controversial. Much of the debate concerning these common childhood items centers on their possible effect on natural sleep cycles, which is affected by light and overall health. Studies have linked the presence of light during sleep with various problems, including the development of nearsightedness in children
Circadian Rhythms:
Circadian rhythms are, simply, the regular mental and physical changes (such as sleep) that occur within any given body over the course of a day. These rhythms are controlled by a mechanism in the brain often referred to as the "biological clock," which is, in turn, reset by sunlight every day. Exposure to any kind of light at the time of night a person normally sleeps (or is sleeping) might alter the natural course of the sleep cycle.The Biological Clock:
What is commonly referred to as the biological clock are actually two tiny structures in the brain known as the suprachiasmatic nucleus, or SCN, which acts as the start of a relay system telling the body to sleep or awaken. This structure is located in the hypothalamus, just above where the optic nerves cross. When light reaches the retina at the back of the eye, it creates signals that travel along the optic nerve to the SCN. Those signals, in turn, travel to several brain regions, including the pineal gland. This pineal gland responds to light-induced signals by temporarily halting the production of melatonin, waking up the individual. When light is not sensed, melatonin production begins again, inducing drowsiness. Any kind of light exposure, including night-lights, might create an environment in which the SCN receives light signals, sending off a relay system that can create unhealthy sleep because of confusing signals.Controversy:
Different studies on the use of night lights has produced opposing results. While the Scheie Eye Institute study linked night lights with myopia, a Ohio University study found no correlation between the two. The Ohio University study, published by the journal Nature magazine in 2000, instead found a link between nearsighted parents and nearsighted children.Package Included:
- 1 x Portable Pocket White LED Card Light Folding Bulb Lamp
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Christian
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Bought this item on
12-12-2011- Other Thoughts: This small night light with innovation design, which is ultra-thin, super light, and easy to carry. It will give us more convenient
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Jacqueline
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Bought this item on
12-10-2011- Other Thoughts: The pocket light is as small as a credit card , so it is so cute and easy to take
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Alexandra
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Bought this item on
12-14-2011- Other Thoughts: With high-capacity lithium battery, this credit card lamp can be used for a long time
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Elizabeth
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Bought this item on
12-08-2011- Other Thoughts: This mini LED pocket light is convenient to take and use, I like it very much, and I will visit again
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Burne.Jones
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Bought this item on
12-11-2011- Other Thoughts: I put this portable lamp in to my wallet everyday when I bought it. This one is easy to take, and give me light conveninent
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