Identify Hetian Jade by Flashlight
How to?Identify Hetian Jade by Flashlight? Jewelery appraisal by flashlight to identify methods of glass imitations, now Hetian jade increasingly scarce resources on the market, are increasingly leading to rampant fraud, counterfeit goods and nephrite glass imitations in nature and ultimately, when purchase Hetian jade, required all kinds of jewelery such as flashlights and other identification aids to be carefully distinguished. Now we have to analyze several characteristics of glass imitation by several features to analyze how to identify the imitation: Check glass products by eyes, commonly contain air bubbles inside, for the relatively small bubbles resorting jewelery appraisal flashlight [...]
Introduce the color temperature of LED flashlight
Buy flashlight for industrial and outdoor lighting, Led flashlight bright flashlight for comfort, good color performance, selection of electric light source light Led flashlight high color temperature. Low color temperature: K's temperature in 2700K 3500K. As at 8 in the morning before the sunrise, lamp, light candles and low color temperature, long red, orange light contains more, the color is softer, gives the visual sense of warm warm; Led flashlight with moderate color temperature: K's temperature in 3500K 4500K, such as the morning after 8, the light from the sun before the 10, contains less orange light and more blue, [...]
LED flashlight flashlight which has some practical characteristics
Many kinds of flashlight, each type of LED flashlight appearance and price are not the same, to choose what kind of explosion-proof flashlight is the most important, according to the different characteristics of the optional LED flashlight should be based on actual usage, to selection of satisfactory products. Outdoor mobile lighting environment is relatively poor, so all the flashlight with 6061-T6 aviation aluminum alloy, CNC CNC machining center machining precision, durable; the surface of the hard anodic oxidation process, abrasion resistance and corrosion resistance; the waterproof technology, through the installation of waterproof ring means, in order to achieve the requirements [...]
What are the Tank007 flashlight function
Function: multifunction flashlight, regardless of the day or night, walking in the rugged mountains or other places, encountered ferocious beast or criminals, can advance the alarm off, if the beast or criminals regardless of alarm sound for good attacks or robbery, the good will be with a high attack beast or criminals, realize personal self-defense, at the same time, the alarm sound loud will also called around the rescue workers, it is too. In order to prevent the bad buy multifunctional flashlight, alarm will be partially dismantled, leaving only the high part of the crime, in the design to remove [...]
What kind of the types of LED flashlight batteries
Rechargeable batteries: they have a lot of different sizes. The rechargeable battery is best used in regular use, and continuous use of time is not very long in the torch. They are the ideal choice because they can at any time on the charger to charge the flashlight for daily household. Usually AA type rechargeable batteries can be replaced by the model of alkaline batteries, but their battery life and brightness will be slightly weaker. The torch designed for charging batteries, light bulbs with their voltage of the battery is consistent (such as wolf eyes 3.4 volt incandescent bulbs), so [...]
Light flashlight certification standards
Light flashlight certification standards The rapid development of flashlight industry, Chinese is gradually developed into a global production base of the flashlight main products and export base, a large number of LED flashlight manufacturers will explosion-proof torch high quality delivery to all over the world, began to show the importance of certification flashlight. The main products certification standards of various countries are: China light flashlight certification: CCC certification, EU certification: CE certification, North American Certification: UL certification, international certification: CB certification. In addition to the product certification standards, including China CQC voluntary certification, the Canadian Standards Association (CSA) product safety [...]
The difference between the pan light flashlight and LED flashlight
Pan light flashlight is not a spotlight, projection lamp, lamp. Floodlights manufacture is highly diffuse, non directional light rather than clear-cut, thus generating soft shadows and transparent objects, used for lighting, lighting is reduced faster than with the spotlight lighting is much slower, and even some lighting weakened floodlight is very slow, it looks like a don't cast a shadow of light. The spotlight projects a directional, well-defined beam of light that illuminates a particular area. The application of the universal light flashlight mainly has the telescopic focusing or the rotating focusing flashlight. LED flashlight flashlight, the daily use of [...]
The difference between Rechargeable LED flashlight and the LED flashlight
Rechargeable LED flashlight and the difference between LED flashlight LED flashlight, also known as LEd flashlight, is a new type of light emitting diode as a light source, it has the advantages of power saving, durable, strong brightness and so on. Currently from the market popular flashlight classification point of view, mainly divided into two: rechargeable batteries LED flashlight and non rechargeable battery flashlight. And rechargeable flashlight, through the battery classification is divided into: lead-acid batteries, lithium batteries, NI-H batteries, etc., due to the current price of lead-acid batteries are cheap, in the market share of the large amount of.
Basic knowledge of flashlight batteries
Basic knowledge of flashlight batteries Flashlight battery 1AA (1 battery 5), 2AA (2 battery 5), 3AA (3 5 batteries), 5 batteries and alkaline batteries is usually said can not charge the dry battery (1.5V) and rechargeable NiMH batteries (1.2V); there is the lithium battery voltage, 2.45-4.20V, 14500, 16340, 18650 models and so on, these figures some faint many friends, said what ah, is actually very simple, specific model numbers are 14500 reasons, such as the cell diameter is 14 mm, the length is 50 mm; 16340 cell diameter is 16 mm, the length is 34 mm, and so on, the [...]
How to select a suitable LED flashlight?
How to select a suitable LED flashlight? LED is a new type of flashlight, since the advent of white LED, had been pushed out, but at the beginning because of the brightness of the white LED is low, the cost is high, it can be said that the product has been in the laboratory stage, the high price of ordinary people and no one dare have a small part of the military on promotion. With the increase of the brightness of the white LED, the cost of the reduction, gradually into the ranks of the public. The brightness increased mainly [...]
The difference between LED and ordinary flashlight
The difference between LED and ordinary flashlight flashlight 1, LED flashlight is the outdoor equipment, one can be illuminated, two is in the accident issued a distress signal. 2, LED flashlight cost much higher than the ordinary bulb flashlight, but long life. Compared with ordinary flashlight has more advantages in energy saving, LED currently on the market of the products in terms of energy consumption between the incandescent lamp and fluorescent lamp. But absolutely environmental protection, no pollution. Long life, is recognized as the advantages of LED, but on the market by LED can be said to be uneven in [...]
Are you a Jade Expert?
Are you a jade expert? Do you like jades, ambers, jewellries, etc? If you do, it's very necessary for you to own one professional jade expert flashlights for identification. Then you will not be cheated by some fakes.?Here, I highly recommend Tank007 Jade Expert Flashlights J6 model, which has got patent. Then you will see what kind of features that a good jade identification flashlight should have. Main features of TANK007 J6: 1. Specially-designed flashlight for identification of jades. Adopting US CREE LED (yellow & white are available), with a strong penetration, it is not only a beneficial tool for [...]
