Why does the moon rise 50 minutes later each day?
The reason why the moon rises 50 minutes late every day While the Earth rotates once a day, the Moon moves to the east little by little. So it takes 50 minutes to 24 hours for the moon to be … more
Digital Sampling
Digital sampling All sounds in nature are analog signals. Analog information holds information from all consecutive times. Since it is not possible to record all the values at all times, usually only the values at regular time intervals are recorded. … more
Chemical Cell (Voltaic Cell, Daniel Cell)
Electricity production before Volta Before chemical cells, such as dry cells, there was only one thing we knew as a way to produce electricity. That is rubbing amber, glass, or metal. Voltaic Cell Alessandro Volta (1745-1827) of Italy in the … more
Constant Velocity
Constant motion Constant velocity motion refers to motion with constant velocity. When a force is applied to an object, the object’s velocity changes, so the sum of all the forces applied to the object in uniform motion becomes ‘0’. For … more
Binary Counting
Binary Binary is a method of representing numbers using only two numbers, 0 and 1. In the case of the decimal system, rounding occurs when 9 is added to 1. In the binary system, adding 1 to 1 does not … more
Avogadro’s Law
Avogadro’s Law The Italian scientist Avogadro (1776-1856) introduced the molecules’ concept to explain gases’ reactions. According to his theory, the volume of any gas at the same temperature and pressure is proportional to the molecules’ number. In other words, regardless … more
Bohr’s Atomic Model
The discovery process of the atom Democritus (Ancient Greece) – Predict the presence of an atom Dalton (UK, 1800) – Applied atomic chemistry Krux (Britain, late 19th century) – Invented a cathode ray tube to explain various phenomena of electrons … more
Addition Polymerization
Addition Polymerization It is a reaction that forms a polymer compound while a double bond of a monomer forms a new single bond. When the monomers are bonded, no other small molecules are produced other than the polymer. It is … more
Slingshot Effect
Slingshot effect Suppose you throw an elastic ball to a moving train. And since the train’s mass is huge, let’s assume that the ball’s mass is negligible compared to the mass of the train. At this time, if the speed … more
Gravity Assist
Run Gravity Assisted Navigation-How to increase the speed of a spacecraft using the moon’s gravity A method of increasing speed using the celestial body’s gravity as the spacecraft moves around a moving object is called ‘Gravity Assist Navigation.’ This navigation … more
Scale of Atom
Each click on the screen increases or decreases by 10 times. The structure of the atom The matter is composed of atoms such as hydrogen, carbon, nitrogen, and oxygen, and the size of the atom is about 10-10m. Atoms consist … more