Name: 水肺潛水初學者--輕鬆瞭解水下空氣 (Scuba Diving for Beginners - Understanding Atmospheres Underwater is Easy)
Uploaded: 2025-05-13T05:45:59.000Z
Duration: 3 min 2 s

Understanding Atmospheres Underwater is Easy.

When you breathe in, your lungs inflate, and when you breathe out, your lungs deflate.

吸氣時，肺部膨脹，呼氣時，肺部放氣。

So, what would happen if you held your breath while scuba diving?

那麼，如果您在潛水時屏住呼吸會發生什麼呢？

If you held your breath while descending, your lungs will become smaller, creating dense pressure inside your full lungs.

如果您在下降時屏住呼吸，您的肺就會變小，從而在飽滿的肺內產生密集的壓力。

If you held your breath as you ascended, the air in your lungs would increase in size under pressure.

如果您在上升時屏住呼吸，肺裡的空氣就會在壓力作用下增大。

In either scenario, eventually your lungs would fail.

無論哪種情況，最終你的肺都會衰竭。

This is why the number one rule of scuba diving is never hold your breath.

這就是為什麼潛水的首要規則是永遠不要憋氣。

So, you might be thinking, why does pressure change underwater?

那麼，你可能會想，為什麼壓力會在水下發生變化？

It's simple, the deeper you dive, the higher atmosphere you're in.

很簡單，你潛得越深，你所處的大氣層就越高。

When diving into a higher atmosphere, the volume of air spaces will get smaller, and the molecules in those spaces will become more compact.

當潛入較高的大氣層時，空氣空間的體積會變小，這些空間中的分子會變得更加緊湊。

The term atmosphere is simply a unit to measure ambient pressure.

大氣 "一詞只是一個測量環境壓力的組織、部門。

Since water is denser than air, greater changes in ambient pressure occur underwater.

由於水的密度比空氣大，是以水下的環境壓力變化更大。

Every 33 feet of depth adds another atmosphere to the ambient pressure.

每深 33 英尺，環境壓力就會增加一個大氣壓。

Once you understand atmospheres, you can calculate your own air consumption at a given pressure.

一旦瞭解了大氣壓，就可以計算出自己在給定壓力下的空氣消耗量。

Helping you plan your dives efficiently and accurately.

幫助您高效、準確地制定潛水計劃。

As a recreational scuba diver, you are trained to dive safely between one and five atmospheres.

作為一名休閒水肺潛水員，您需要接受在 1 到 5 個大氣壓之間安全潛水的培訓。

At sea level, you start your dive at one, and as you descend deeper underwater, the pressure and density increases, and the volume decreases.

在海平面上，您開始潛水時的壓力為 1，隨著您下潛到水下更深處，壓力和密度會增加，體積會減小。

This relationship between Pressure, Density and Volume stays consistent.

壓力、密度和體積之間的關係保持一致。

At 33 feet deep, you're at two atmospheres.

在 33 英尺深的地方，有兩個大氣壓。

At this depth, volume is one half of what it was on the surface, and the density is two times denser.

在這個深度，體積是地表的二分之一，密度是地表的兩倍。

This relationship continues as you dive deeper.

這種關係會隨著你的深入而繼續。

All the way down to 132 feet, we're at five atmospheres, the volume is 1/5 of what it was on the surface, and the density is five times denser.

在132英尺以下，我們有5個大氣壓，體積是地表的1/5，密度是地表的5倍。

Think about it this way, if you had a balloon at the surface with a volume of 10 units.

這樣想一下，如果在水面上有一個體積為 10 個組織、部門的氣球。

Taking it down to five atmospheres would reduce the balloon's volume to two units.

將其減小到 5 個大氣壓，氣球的體積就會減小到兩個組織、部門。

Because at 132 feet, the volume of an object is 1/5 of what it was on the surface.

因為在 132 英尺處，物體的體積是在地表時的 1/5。

Learn how to dive with Chris Brock, a PADI instructor teaching introductory dives, private scuba lessons, advanced certifications, and guided underwater tours in Maui, Hawaii.

Chris Brock 是一名 PADI 教練，在夏威夷茂宜島教授入門潛水、私人水肺潛水課程、高級認證和水下導遊。

Join the Ohana and follow Chris on social media and visit chrisbrockscuba.com for videos, articles and lessons on learning how to dive.

加入 Ohana，在社交媒體上關注 Chris，訪問 chrisbrockscuba.com，瞭解有關學習如何潛水的視頻、文章和課程。