This can be bulb thermometer. When the bulb is held in the hand the liquid warms, expands, and rises up the tube. It can also be a novelty such as the "drinking bird". When the bulb on the bottom is held in the hand, the liquid expands and rises up the tube to the head making it heavier so the bird tilts down.
It's possibly a variation of a lava lamp. The fluid in the lava lamp was heated by the bulb on bottom and rose to the top where it cooled and fell again. There may have been a hand held variation that worked on the heat of your hand.
The liquid volume of an object is the amount of liquid (like water or oil) that the object (like a glass) can hold when completely filled.
The "wetting" that happens when an object is immersed in a liquid depends on the surface energy of the object and the capilary forces in action on the surface of the liquid. for example mercury will not "wet" glass but water can wet the same glass.
To see other object such as liquid, and solid
Thermometer
Volume is the amount of 3-dimensional space occupied by an object. It could be a liquid, but it can also be a gas. For example, a glass of air.
A condenser is generally an object made from glass, used to condense a gas to a liquid.
Particles in a liquid move past each other, allowing the liquid to flow smoothly. When you tilt a container to pour a liquid, the particles are able to rearrange and flow into the glass due to their ability to move and adapt to the new shape. This allows the liquid to flow and fill the glass evenly.
Refraction
Glass is not a liquid. It is in fact a solid.
When you see a transparent object in a clear liquid, it is due to the principles of refraction and transmission of light. Light passes through the transparent object and is bent or refracted when it enters the object, which allows you to see the object's shape. Additionally, the contrast between the object and the liquid allows you to visually distinguish them.
A laboratory thermometer is used to check the temperature, or changes in temperature, of an object with precise accuracy.
Liquid glass is sodium metasilicate, Na2SiO3. (Wikipedia)