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Milk is a colloids. Fat globules are small enough to keep from settling out. Orange juice is a suspension.
Glass, surprise.
dubi
Bonded glass is a way to seal materials with an intermediate glass layer. It is used for micro machined structures and uses low melting glass.
because it makes the windows of the structures
slide cover slips
3/4th
ovation is from costco varilux is from essilor
Glasses are not all of the same size: compare a small sherry glass and a large beer glass.
Horticultural Glass is the glass panes used predominantly in greenhouses and other structures with plants inside. It is specified for its high transmittance of sunlight at about 95% which is a significant increase on the 80% for normal glazing.
You want the ior of the glass to be identical to the liquied.