What is viscosity?
Viscosity is the measure of how thick or syrupy a liquid is: the resistance it offers to flowing, caused by internal friction between its particles.
What is a mouchette?
A mouchette is a curved, dagger-shaped motif in Gothic tracery resembling a fish bladder, typical of the late Gothic Flamboyant style.
Measuring electricity use per circuit: how to find the power hogs in your home

How to measure use per circuit and per appliance. From the P1 port to a Shelly energy meter in the consumer unit. Find the power hogs and save where it counts.
Saving seeds from your own garden: how to do it crop by crop

Saving seeds from your garden: the method for each crop, F1 versus open-pollinated, drying, storage life and the germination test. Practical step by step.
What is a vacuum insulation panel?
A vacuum insulation panel (VIP) is a thin insulation panel with an evacuated core in a gas-tight foil that insulates very well at minimal thickness.
What is a vinyl cavity tray (vinylslabbe)?
A vinyl cavity tray is a plastic damp-proof strip that replaces lead, for example above a window frame between the lintel and the frame in a cavity wall.
What is a finger expansion joint?
A finger expansion joint is an expansion joint in a bridge deck or viaduct made of interlocking metal teeth that accommodate the expansion and contraction of the deck.
What is a finger joint?
A finger joint is a glued lengthwise joint in timber, in which two pieces with interlocking wedge-shaped teeth are glued together.
What is a Vinex district?
A Vinex district is a large new-build neighbourhood in the Netherlands built from the 1990s onwards under the Fourth Memorandum on Spatial Planning Extra (Vinex).
What is a villa?
A villa is a spacious, detached house on its own plot with a garden. Originally it was a Roman country house outside the city.
