Dalton's law and divingWritten by Jakob Jelling
Dalton's law refers to effects which partial pressure might have on divers. This law says that pressure of mixed gases is equal to pressure produced by individual gas. It can also be explained by saying that total pressure of a mixture of gases equals sum of partial pressures of gases which are part of it.This means that number of molecules present in total volume of a gas is proportional to number of molecules present on each one of gases which compose it. This way, while total gas pressure increases as a diver goes deeper into water, partial pressure of each gas involved increases as well, and effects which might cause on divers body also increases with it. For example, air is a mixture of gases which contains about 80% of nitrogen and 20% of oxygen although it also includes small amounts of other gases as well. According to Dalton's law, partial pressure exerted by nitrogen and by oxygen which make air will be equal to total pressure of air; and they will increase simultaneously.
| | Kayak paddle bladesWritten by Jakob Jelling
Different kayak paddle blades will have different effects on control you have over your kayak.The blades of your kayak paddles are most important part when it comes to worry about whether or not you'll be able to control kayak. This part of paddle effects how much water you can push with each stroke as well as how paddle will be able to move through water. You generally want a good balance between amount of force you get with each stroke and how easy it is for paddle to move through water. There are two main types of paddle blades: symmetrical and asymmetrical. The type of paddle that you use will generally have something to do with type of kayaking you're intending on doing. Usually for people who are going kayak touring, asymmetrical paddles are norm. This is due to fact that asymmetrical shape can help give you more control over kayak - and makes it easier for paddle to just move through water. Another thing that you should look at when you're trying to decide what type of paddle blades will work best for you are whether or not they are curved. If you're a beginner, then you'll probably want to start out with a flatter blade. This is due to fact that these blades are very easy to control even if you're just starting out. However, if you're an experienced kayaker, then you might want to look into getting a curved blade. This is due to fact that curved blades will grip water better and give you more power.
|
