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Results for: 'Air pressure'

14:32

060 lecture 1: aIr pressure

By: dfeurzei

AIr pressure: what it is, why it is

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...

1:46

Syrup Clarity

By: uvmext

Syrup clarity is one of the four basics of grading. Syrup that come right off the evaporator is cloudy. Most of the cloudiness found in unfiltered syrup is naturally occurring minerals such as calcium also known as sugar sand or niter. Syrup clari...

1:42

Syrup Color

By: uvmext

In Vermont, Grade A maple syrup is divided into four distinct color classes. Those classes are Golden, Amber, Dark and Very Dark. The lightest grade of syrup, Golden, has the most delicate flavor. A lot of the time it will be made at the beginning...

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...

9:18

Pressure Cooker Reality TV Video Essay

By: gmoroz

Video essay diving into Netflix's reality tv show Pressure Cooker.

4:15

2000-05-05 Mansfield Hike

By: waw

Mr. Wes and Mr. Rogers tackle the Mansfield massif. I was the first day in 24 months where the air temperature was above 90 degrees C.

10:39

Setting up Your Samples for Staining

By: tpritcha

This video shows how to set up your samples on your slides so that you can stain your samples.

0:06

Physics?

By: ckuiper

Throwing a ball in the air to see the height of the room.