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4:16

CS021 - Main function

By: rdasari

CS021 - Computer Programming I University of Vermont Supplement video for Tony Gaddis, Starting out with Python, 4th Edition

6:28

CS021 - Local vs Global variables

By: rdasari

CS021 - Computer Programming I University of Vermont Supplement video for Tony Gaddis, Starting out with Python, 4th Edition

4:33

CS021 - Menu Driven Programs

By: rdasari

CS021 - Computer Programming I University of Vermont Supplement video for Tony Gaddis, Starting out with Python, 4th Edition

1:37

Maple Color Grades

By: uvmext

There are four grades of pure maple syrup; Golden Color/Delicate Taste, Amber Color/Rich Taste, Dark Color/Robust Taste and Very Dark Color/Strong Taste. Each grade has a range in color as defined by its light transmittance. Knowing the color of p...

2:01

Measuring Syrup Density

By: uvmext

Most people know that to make maple syrup you have to do a lot of boiling. You collect the sap from the trees and you evaporator the water while concentrating the sugars. You might not know that to determine if you actually have correct density sy...

0:55

Sanitation

By: uvmext

Like people, plants have strong mechanisms to prevent the spread of microorganisms within their tissues. Trees are capable of "walling off" wounds to prevent infections from spreading throughout the tree. This healing process also slows, and event...

0:47

Vacuum

By: uvmext

Sap flows out of trees due to the difference in pressure between the inside and outside of the tree. In the 1950s, maple researchers and producers found that adding vacuum pumps to tubing systems could increase this pressure differential and there...

0:42

Traditional Collection Methods

By: uvmext

Traditional methods of sap collection have changed over time. Initially, Native Americans created gashes in the stem, and directed sap into wooden or bark vessels. Early spouts were created by hollowing out small twigs, which were inserted into ta...

1:01

Why Does Sap Flow?

By: uvmext

Why Does Sap Flow from Maple Trees? Throughout the maple region, there are several weeks of alternating freeze and thaw temperatures each spring. This weather provides the right conditions for sap flow in maple. Unlike most trees, maples have tiny...