A flashlight is a friend and companion for you that can help you in moments of darkness! These widely used gadgets, which do not have a lot of weight and volume, open a way of light during travel, in the mountains and plains, in the cave and in the dark nights of the mountains and desert, so that you do not feel afraid and worried. You might like to know more about these portable lighting gadgets. For this reason, in this article, we are going to answer 9 frequently asked questions about led-flashlights:
1. When was the flashlight invented?
This gadget was invented by a British inventor named David Maisel. This device, which was produced by this man’s initiative in 1899, was known as “electric hand torch”, which is considered the great ancestor of today’s flashlights.
The first generations of this gadget worked with the help of 3 carbon batteries that were placed in a tube and were responsible for providing the energy needed for it. David Meisel also installed a simple switch to turn on and off his interesting invention.
2. Can you take a flashlight on a plane?
If you plan to take your flashlight with you on the plane, you should know some things about it. A flashlight that is less than 7 inches long and is not classified as a tactical weapon is allowed on the plane. In general, you can take your flashlight on a plane if you remove the batteries.
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3. What are the reasons for flashlights to fail?
One of the biggest misfortunes is that precisely in critical situations when you need your electronic devices, they fail!
What happened to me one dark night in a valley outside the city and I didn’t know what to do in that situation? It is at such times that one needs these efficient gadgets. In the following, we will introduce some reasons for the failure of these gadgets:
A) Completion of battery charging
Sometimes we don’t pay attention to the battery charge and forget to check it. If the device does not turn on, the first thing you should do is to evaluate it from this point of view, and in general, always keep in mind that when the battery charge of the flashlight reaches 15%, the light will be greatly reduced or will not turn on at all.
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B) Possible battery failure
Sometimes the battery of the device is damaged due to reasons such as falling and hitting or other cases. It should also be noted that the life of batteries is limited and after a certain number of times they are charged, they lose their efficiency and it is time to replace them.
C) Bruising!
If your flashlight doesn’t work, maybe the LEDs or other parts are damaged and you need to repair them. If it’s out of order, consider buying a new flashlight.
D) Contact with water
Perhaps unintentionally, your gadget has been exposed to water. Despite all its advantages, the flashlight does not tolerate water at all; unless its designers have equipped these tools with waterproof features from the beginning.
E) Heat the flashlight
If your flashlight gets too hot, it is likely to prevent the battery and its diodes from working properly and may even damage them. To solve this problem, leave it alone for a short time. By turning it off, let it rest for a few minutes and then resume its work.
4. How does a flashlight work?
The basis of the work of the flashlight is based on the electrical energy that flows between two metal strips, and its source is the batteries that are embedded in it. These batteries are connected to a metal plate or sheet, which, by being placed between two positive and negative electrodes, causes the flow of electricity. This flow easily acts as a factor for turning on the lamp and producing light and illumination.
When the device is turned off, the relevant key is in the off state, which means that the power flow is not established and causes the lamp to turn off and cut off the lighting. In this case, two metal strips are separated from each other and the electricity flow is cut off.
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5. What kind of flashlight do the police use?
The device, known as a “police light”, is not only used by police forces, but due to its capabilities and features, it is suitable for a wide range of functions, especially for hikers and rescue teams and the like. These devices are divided into two groups: “chargeable police light” and “battery-powered police light”.
This device is often made of metal or strong plastic and is known for its low weight and high strength and resistance. Its power and range of illumination are high and sometimes it illuminates a distance of several hundred meters. The mentioned gadgets have the possibility of high zoom and their body material is waterproof and resistant to corrosion and rust. The lamps of this type of flashlight are selected from high-quality LEDs with a lot of light.
Another feature of the police flashlight is its holders, which are used to attach to the wrist, clothes or backpack.
Its leather, plastic or cotton strap is placed at the end of the body and behind the battery. The built-in keys on the device, apart from turning it off and on, are useful for activating the side lights and setting the exposure modes.
The new models of these devices are charged in two ways with the help of Micro USB or Type-C ports.
6. What is the highest lumen for a flashlight?
The amount of brightness and light that a lamp or flashlight produces per second is determined by the measurement unit lumen. This amount is different in lamps, light sources and types of flashlights, and its amount should be considered as an important criterion in choosing these devices.
Different flashlight models may have different modes and levels of brightness; For example, 200, 400, 800, 1600, 3200, 6400, 12800 and 25000 lumens, these numbers are present in some current market models. By selecting and pressing the corresponding key on the device or by touching it every time, you can achieve higher lumens of brightness.
You should determine the desired brightness based on your needs; For example, the brightness of 1 to 10 lumens may be enough to light up a book page for reading in special conditions, 10 to 30 lumens will light up the surrounding area as much as the light of a candle, 100 lumens seems to be enough for normal use or lighting up the road surface. ;
But if you are looking for a lost object, person or animal in a dark space, a flashlight with 300 lumens will light up to a distance of 50 meters, leave the use of 1000 lumens and above for security forces, rescue groups and policemen!
7. Why is my flashlight grayed out?
If you use the flashlight on your cell phone, it’s possible that you’ll sometimes see the flashlight grayed out on some models. In some cases, the cause of this problem is the simultaneous use of the phone’s camera. Another possibility can be raised and that is that after a long time of working with the phone, it is possible that your mobile phone has a software bug and this causes the light of the mobile power light to turn gray.
8. How many lumens do I need in a flashlight?
Considering the light power of the flashlight, choosing one of these devices that provides up to 100 lumens of light seems to be sufficient for normal use.
9. Why do police use red light flashlights?
In general, the red light in the flashlight is less bright and when used in the dark, it can create more contrast and show more details.
This capability will be very useful in special military places such as shelters, submarines and when the military forces do not want anyone to notice their presence, for security forces and rescue teams to see at night, as well as for use in photography (dark room).
Conclusion
A flashlight is one of the most widely used and popular devices that are used to create lighting at night and in dark environments. Their brightness is indicated by the lumen measurement unit, and each level of brightness has a different exposure power. In this article from AS2 website, we tried to answer 9 common and frequent questions about the features and performance of these gadgets so that it will be useful for you when buying these tools.
