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بوابة:غوص/علوم الغوص/38

الضغط (ورمزه ض بالعربية، أو p بالإنجليزية)، هو القوة النوعية المؤثرة عمودياً على مساحة السطح.

والضغط الجوي (حوالي 1 بار عند سطح البحر) هو وزن عمود الهواء الواقع على مساحة قدرها 1 سنتيمتر مربع في الخلاء على مستوى سطح البحر. وهو ما يعادل وزن عمود من الزئبق على نفس المساحة ارتفاعه 760 مليمتر.

ويٌقاس الضغط بوحدة مليمتر زئبق أو باسكال أو بار، وهناك وحدات قياس أخرى له.
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بوابة:غوص/علوم الغوص/38
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