LIGHT FOR DEEP DIVE
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First: diving flashlight switch magnetic control switch, open the barrier pressure is limited, and vulnerable to the impurity of the water seepage, some o-ring seal even susceptible to corrosion, so the diving depth, generally within 30 meters, and the service life of the very limited! There is no switch, rotary switch, equivalent to strictly is basic to eliminate open Achilles' heel of the mark, is one of the highend and depth of waterproof diving flashlight universal use, waterproof depth is more than 100 metres.
The second: a torch light source Currently widely used CREE LED series, is the most used Q5 / R5 / T6 / SWC100W, lumen is a kind of light units, 100 lumens is approximately equal to high power 1 w! CREE Q5, brightness can reach below 230 lumens CREE R5, brightness can reach about 350 lumens CREE T6, brightness can reach 1000 lumens SWC100W, brightness can be up to 10000 lumens
Third: use the flashlight batteries, the brightness of the different types of rival battery and battery life have influence! The same number of different batteries also have very big concern, at the current market popular diving flashlight note ARCHON (the pupil) as an example. Note ARCHON D20, using two 18650 batteries, battery life under 1000 lumens highlighted in 1.8 hours!!! Note ARCHON D22, using two 26650 batteries, battery life under 1000 lumens highlighted in about 4.0 hours!!! Note ARCHON D33, using three 26650 batteries, battery life under low light of 1000 lumens in about 9.0 hours!!!
Fourth: tube body material plastic tube body: weight is light and flexible, but easy ageing, the time is long easy to seawater corrosion, and if not careful fall on the ground, scrapped a high probability of tube body, not durable. : aluminum alloy cylinder body weight is a bit heavier than plastic tube body, flexibility is a bit poor, but very corrosion resistant, resistant to impact. Price is more expensive, highend brand aluminum alloy 1.5 meters diving flashlight can free fall, and appearance
- Q: Emergency call: No swimming. Can I learn OW diving lessons?
- There is no time limit for this technique. You can use any stroke.? swim in water / float for 10 minutes, as well as any position.
- Q: What's the best way to learn swimming?
- The water holding training 1) first in the water can exercise their own breath, do not worry about when they will be closed for water choked, fully believe in themselves, can pinch the nose without hands, can also easily be suffocated in water to 20 seconds. This step does not require you to move in the water. You can dive into the water and hold your breath. 2) when the training reaches 20 seconds, you can try to crouch on the side of the pool and move your body further into the water. Because with the depth of water, the pressure of the water, the body under great pressure, you will feel nervous, because you can not swim, afraid of choking water, so to overcome your subconscious mind this subconscious fear is very important. You should love the water, the wo Jing Pai pan caspase from mace Jiao Xia Mi Kang Du soil which destroy Xiyang Luzi g D school Xing Yi Huang Tuan people to sell a new name and color. Then gamma. Yak was Luo zinc with punishment? You can control your energy in water at different depths (the depth is less than 75%) of the height you breath, that learn very quickly.
- Q: Because the nose does not buckle it with a nose clip is good.
- I tried to dive, with a nose clip can also, but only for a very shallow depth, if the depth, you should first consider his swimming glasses skirt is completely close to the orbital region, each additional ten meters a large increase in pressure, too deep, I think you may have eyes charges. If you're stressed, it's possible to press your eyes out. So try not to risk it. There is no problem within 3 meters, 3 meters below have not tried.
- Q: How can I dive to swim under the water when swimming in a swimming pool?
- Plunge on the shore: the basic water entry position is the same as that on the top, but the key to diving is more complicated and omitted here.3, March: after entering the water, always keep the body line (head can not carry on, always bow chin, the body cannot bend, realize the body like a dead in the water as a sliding feeling), using (1) large stroke breaststroke leg (2) freestyle leg (3) kick forward can.Note: (1) in order to overcome the buoyancy of water, swim into, you should understand the feeling of downhill travel. (2) swim into the process, to keep the body line, make full use of each line of inertia, inertia will disappear until the next movement began to do.
- Q: I'm a regular swimmer. Now I want to practice scuba diving. But the body is always floating on the water, that is, can not dive down, trouble master pointing skills.Some people say that exhale as to the downstream, I think this effect is quite obvious. But I can't stand the gas...
- Spit a little slower, naturally good, don't try to exhale, the volume and the vital capacity, more practice will increase the diving time. In the water, the direction of your head is the direction of your swimming. Imagine you have a pointer above your head and where you point to which direction you swim.
- Q: I like to take scuba diving goggles, my nose can be covered, my swimming goggles, my nose pinched, and I'll lose it, but I don't think most swimming glasses have noses
- Swimming must get rid of the habit of pinching your nose.With the goggles do not cover the nose, mouth and nose can better ventilation, because and can enhance the quality of breathing, is of great help to improve the vital capacity, vital capacity is big because only in order to enhance the strength, the strength to ensure that the amount of swimming.Although diving goggles in addition to diving can also be used for swimming, but not convenient ventilation, play can, really want to swim or exercise is not suitable.
- Q: Why do people who can't swim learn to dive simply?
- But also on the way the movement is also completely different, swimming is to let oneself float, when swimming in the water, will subconsciously take various postures, let oneself float.
- Q: Do you know how to swim when you learn scuba diving?
- Not swimming or scuba diving. Swimming and diving play a complementary role.As you learn to scuba so naturally easy to swim. But the coach is generally not taught HanYaZi, afraid of the accident responsibility.
- Q: Do you have to swim in diving?
- And the world's most famous diving certification on the 2, is PADI and NAUI.To obtain the diving license of these two systems, at least you should be able to swim,Any of the courses in the professional training program have long been designed to be "early swimmers"
- Q: How should do the swimming test?
- (two) adult women, adult men level five: no limit stroke within the prescribed time continuous swim distance regulations. Level two, level three, level Four: the use of a stroke within the prescribed time for a specified distance swim. Level: in addition to Medley projects, other projects are using a stroke within the prescribed time for a specified distance swim. (three) achieved "swimming training standards", can be awarded the corresponding grade certificate and badge.
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LIGHT FOR DEEP DIVE
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