|[pic] |1. Eyepiece |Contains a magnifying lens that focuses |
| | |the image from the objective into your |
| | |eye. |
| |2. Course Adjust |For focusing under low magnification |
| |3. Fine Adjust |For focusing …show more content…
In essence, a telescope eyepiece is an arrangement of lenses in a barrel-shaped array to aid in image magnification. They come in a wide variety of sizes to match the focuser and an equally wide variety of magnification factors and styles. Amazon.com offers a variety of telescope eyepieces up for grabs! [pic]
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The triple beam balance is a rugged, inexpensive weighing instrument. It is named for the three beams which carry weights.
A. The middle beam reads only in 100 g increments.
B. The far beam reads only in 10 g increments.
The weights in each of these must always sit in a "notch". They cannot be placed at arbitrary points on the beam.
C. The weight on the front beam can be placed to read continuously from 0 to 10 grams.
The Triple Beam Balance is a typical mechanical balance.
It has a beam which is supported by a fulcrum. On one side is a pan on which the object is placed. On the other side, the beam is split into three parallel beams , each supporting one weight. In measuring the weight of an object, rather than adding additional weights, each of the three weights can be slid along the beam to increase their lever arm.
It works just like a tetter-totter. If you have two people of unequal weight, the heavier person sits closer to the fulcrum to decrease their lever arm.
Triple Beam Balance