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Need a "measurement" category, but for this, "fluid mechanics" will sort-of do
See the link for existing types of volumetric flasks. In
general, you fill them with fluid to a certain point, and
measure-marks along the tall thin top portion allows
adding a precise amount of something else. Sometimes
you can add an unknown volume of something else, and
its volume. However, all the flasks shown
a problem that this Idea will address.
Certain things are too big to fit, to be added to the flask.
Therefore I want a flask with both a top plug (some
existing flasks have that) and a bottom that is
Consider that for a microwave oven, you can obtain a
cooking dish that has a plastic lid that seals tightly. Such
lid could be applied to the wide-open base of the flask I
So, with bottom in place, fill the flask to a certain level,
insert top plug, turn upside down, remove bottom, add
item too large to fit through the top, replace bottom,
turn right-side up, remove top plug, and measure the
volume of the item.
As mentioned in the main text. [Vernon, Apr 06 2018]
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||Might be a bit cool by now, mind, but WKTE ...
||Is the idea to be able to measure the volume of solid
objects too big to fit through the neck of a standard
||One problem: true volumetric flasks are very precisely
calibrated. Any removable parts are going to have re-fit
very consistently in order to preserve accuracy. A plastic
lid will be too flexible. A screw-on lid would have to be
tightened up to exactly the same degree of tightth.
||But there is already a much better way to do this,
consisting of a tank that has a spout fitted part-way up
one side. You fill the tank, until water just starts coming
out of the spout. Then, you drop in your object, and
collect the displaced water from the spout into a
measuring cylinder or similar.
||"and a bottom that is removable."
||I shudder to think what uses Sturton might find for one of those.
||[MaxwellBuchanan], if the flexibility of the bottom cover is
a concern, it can be addressed by making only the edge of
the cover flexible. You do know that the thicker a plate of
plastic, the less flexible it usually is?
||Don't bewilder him, [Vern], he's never seen a plastic plate in his life.
||Even the disposable crockery in the Buchanan family picnic basket is Sevres porcelain ... the ordinary dinner service is silver gilt, they keep the platinum stuff for "best".
||hmmm, could you use a vacuum pump and know the volume of the liquid by how much air you pumped out?