On jersey from waterproof index selection problem - 1 views

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  #1 mo xiaoxiao on 31 Aug 13

   

  Riding out rains , is a very ordinary thing . One has a good rain function cycling jerseys or raincoat is essential for the majority of riders and equipment. We often see when visiting the outdoor shop jersey marked with rain water resistance reaches 6000 or 10000. Here's 6000 and 10000 , and their units are millimeters of water pressure (mmh2O). Usual explanation is that when the pressure in the water column 10000mm high fabric above , within 24 hours of water seeping from the fabric does not exceed 3 drops , then we think this dress waterproof index 10000mm. batman cycling jersey So he was asked , 6000mm 10000mm waterproof waterproof pressure and pressure What is the difference ah ? What indicators should I buy ?
  
     
  
  
  If no air ( resistance ) , the day after the cloud as rain came down , all the way through the acceleration in the campaign, when it reaches the ground speed will reach 300 m / s, so the speed of the basic equivalent of half the speed of a bullet . Halo ~ that there will never be on land living creatures . Thanks to Chairman Mao ! Since the presence of air resistance , and begin to form when raindrops fall , after a short varying acceleration ( acceleration becomes smaller ) movement , when the rain the air resistance is equal to its own gravity , ok, this time, the rain began to fall into the uniform phase, until it reaches the ground. Physics put this uniform rate of call objects terminal velocity .
  

  Scientists have concluded that : Under normal circumstances, the raindrop diameter from 0.5mm ~ 6mm between rare cases , rain will reach a diameter of 8mm or 10mm ( the Hawaiian Islands has been observed ) . If the particles of water is less than 0.5mm, then the effect of the atmosphere updraft , such a size sufficient to allow the water particles stay in the air. The raindrop size, generally has no more than 6mm. Since the presence of air resistance , big raindrops in a fall they tend to break down into many tiny raindrops volume plummeted . In addition, these big raindrops on the whereabouts constantly collide with each other , but also to promote them apart.monton cycling  Scientists found that in laboratory conditions, big raindrops usually up to about 5 mm in diameter, when it began to disintegrate . In the clouds , big raindrop diameter of 5 mm , it is usually because of mutual collisions would have cracked. This is why rarely seen on the ground diameter of 5 mm or larger raindrops reason, because rain can not avoid collision with many other similar fate.

  
  

  Raindrop terminal velocity , with raindrops the size (size) there is a strong correlation. Generally , drizzle (diameter 0.5mm) of the terminal velocity of 2 m / s, and the rain ( rain maximum diameter of about 5.5mm ) maximum terminal velocity raindrop 8 to 9 m / s.

  
  

  With the terminal velocity , you can know the last raindrop kinetic energy , kinetic energy and potential energy junior high school physics conversion formula is enough to answer terminal velocity relationship between the height and the water column . That is : 0.5MV ^ 2 = MgH, into terminal velocity , can be obtained: raindrop terminal velocity of 8 m / s , H = 3.2 m; raindrop terminal velocity of 9 m / s , H = 4.05 m; raindrop terminal velocity to 2 m / sec , H = 0.2 meters away.

  
  

  And then integrated into a number of factors ( infiltration, increase the thickness of the waterproofing membrane to extend the service life , etc. ) , if only for inter-city travel , outdoor wear everyday words , 6000mm waterproof indicators riding clothing, pants enough to respond freely . But if you need to compare difficult environment , it is best to choose more than 10000mm waterproof index riding clothing, pants .

   

  <div class="cArrow"> </div><div class="cContentInner">Riding out rains , is a very ordinary thing . One has a good rain function cycling jerseys or raincoat is essential for the majority of riders and equipment. We often see when visiting the outdoor shop jersey marked with rain water resistance reaches 6000 or 10000. Here's 6000 and 10000 , and their units are millimeters of water pressure (mmh2O). Usual explanation is that when the pressure in the water column 10000mm high fabric above , within 24 hours of water seeping from the fabric does not exceed 3 drops , then we think this dress waterproof index 10000mm.<strong> <a rel="nofollow" href="http://www.cycling-wear.com/2012-batman-blue-black-long-sleeve-jersey-and-tight-cycling-team-kit.html">batman cycling jersey</a></strong> So he was asked , 6000mm 10000mm waterproof waterproof pressure and pressure What is the difference ah ? What indicators should I buy ?<br /> <br />     <br /> <br /> <br /> If no air ( resistance ) , the day after the cloud as rain came down , all the way through the acceleration in the campaign, when it reaches the ground speed will reach 300 m / s, so the speed of the basic equivalent of half the speed of a bullet . Halo ~ that there will never be on land living creatures . Thanks to Chairman Mao ! Since the presence of air resistance , and begin to form when raindrops fall , after a short varying acceleration ( acceleration becomes smaller ) movement , when the rain the air resistance is equal to its own gravity , ok, this time, the rain began to fall into the uniform phase, until it reaches the ground. Physics put this uniform rate of call objects terminal velocity . <br /> <p>Scientists have concluded that : Under normal circumstances, the raindrop diameter from 0.5mm ~ 6mm between rare cases , rain will reach a diameter of 8mm or 10mm ( the Hawaiian Islands has been observed ) . If the particles of water is less than 0.5mm, then the effect of the atmosphere updraft , such a size sufficient to allow the water particles stay in the air. The raindrop size, generally has no more than 6mm. Since the presence of air resistance , big raindrops in a fall they tend to break down into many tiny raindrops volume plummeted . In addition, these big raindrops on the whereabouts constantly collide with each other , but also to promote them apart.<a rel="nofollow" href="http://www.cycling-wear.com/monton-cycling.html"><strong>monton cycling</strong></a>  Scientists found that in laboratory conditions, big raindrops usually up to about 5 mm in diameter, when it began to disintegrate . In the clouds , big raindrop diameter of 5 mm , it is usually because of mutual collisions would have cracked. This is why rarely seen on the ground diameter of 5 mm or larger raindrops reason, because rain can not avoid collision with many other similar fate.</p> <br /> <p>Raindrop terminal velocity , with raindrops the size (size) there is a strong correlation. Generally , drizzle (diameter 0.5mm) of the terminal velocity of 2 m / s, and the rain ( rain maximum diameter of about 5.5mm ) maximum terminal velocity raindrop 8 to 9 m / s.</p> <br /> <p>With the terminal velocity , you can know the last raindrop kinetic energy , kinetic energy and potential energy junior high school physics conversion formula is enough to answer terminal velocity relationship between the height and the water column . That is : 0.5MV ^ 2 = MgH, into terminal velocity , can be obtained: raindrop terminal velocity of 8 m / s , H = 3.2 m; raindrop terminal velocity of 9 m / s , H = 4.05 m; raindrop terminal velocity to 2 m / sec , H = 0.2 meters away.</p> <br /> <p>And then integrated into a number of factors ( infiltration, increase the thickness of the waterproofing membrane to extend the service life , etc. ) , if only for inter-city travel , outdoor wear everyday words , 6000mm waterproof indicators riding clothing, pants enough to respond freely . But if you need to compare difficult environment , it is best to choose more than 10000mm waterproof index riding clothing, pants .</p></div>

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