How to Have Successful First Days of School
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| • Relaxed spam filters • Post links & upload pics • Get notified of responses |
• Join teacher groups • Apply to teacher jobs • Post a resume |
| LOGIN |
| • Relaxed spam filters • Post, comment, & upload pics • Get notified of responses |
• Join teacher groups • Apply to teacher jobs • Post a resume |
| LOGIN |
Here's what I found:
"Two globes (also called phials or ampules) of glass are
connected by a narrow throat so that sand (with relatively
uniform grain size) flows from the upper globe to the lower."
Source:
[link removed]