Meniscus?

Plants!

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
User avatar
Starlight189
Death Adder
Death Adder
Posts: 57
Joined: Mon Nov 07, 2005 5:34 pm
Location: Devon, England

Meniscus?

Post by Starlight189 » Fri Apr 21, 2006 11:50 am

My biology teacher gave us instructions on how to set up a potometer. According to him the way to measure the rate of transpiration is to measure the distance moved by the air/water meniscus in a given time.

I looked up meniscus in your dictionary but I couldn't find anything relating to plants. :?, I'm guessing he means the air bubble..is meniscus the right word to use?

Also, do you think that 1 minute would be enough time to measure it?

Thankyou :D
If you try to fail, and succeed, which have you done?

User avatar
canalon
Inland Taipan
Inland Taipan
Posts: 3909
Joined: Thu Feb 03, 2005 2:46 pm
Location: Canada

Post by canalon » Fri Apr 21, 2006 1:51 pm

The meniscus is the curved form at the air/water interface. The curvature being due to the adhesion of the water to the glass wall of your instrument. You are supposed in all this kind of instruments to make the reading at the lowest level of water.

As for the time for a reading, I have no idea. Why not try to see?
Patrick

Science has proof without any certainty. Creationists have certainty without
any proof. (Ashley Montague)

User avatar
Starlight189
Death Adder
Death Adder
Posts: 57
Joined: Mon Nov 07, 2005 5:34 pm
Location: Devon, England

Post by Starlight189 » Fri Apr 21, 2006 4:44 pm

Ah I get it now :D Thankyou very much.
If you try to fail, and succeed, which have you done?

Post Reply

Who is online

Users browsing this forum: No registered users and 1 guest