The density of an object is the mass of the object compared to its volume. The equation for density is: Density = mass/volume or D = m/v. Each substance has its own characteristic density because of the size, mass, and arrangement of its atoms or molecules.
Rating Newest Oldest. Best Answer: The knock sensor is basically a microphone. Its there to listen for spark knock which is also called detonation, pinging, and pre ignition. This is the condition inside the engine where the fuel begins to burn before its supposed to. It sounds like someone rattling a can of marbles. It can easily destroy the internals of an engine.
Daylight Sensors are mainly used to produce Redstone signals in proportion to the amount of sunlight and moonlight. They can be inverted by tapping on it. There are two types of Daylight Sensors, the regular and the inverted sensor. The Regular Daylight Sensors activate when exposed to a sufficient amount of sunlight, or when the sky light level drops to 0. The Inverted Daylight Sensors activate only when the sunlight is low or nonexistent.