Geometric Series
Geometric sequence is The geometric sequence is a sequence in which each term has a constant(common) ratio to its preceding term. For example, the geometric sequence with the first term ‘a’ and the common ratio ‘r’ … more
R-L-C Serial Circuit
RLC serial circuit Let’s consider a circuit in which a resistor (R) – an inductor (L) – a capacitor (C) are connected in series. Every moment, the current through the circuit is the same at every … more
Gravity difference on several planet (with the scale that used on Earth)
Let’s measure my weight on several planets with the scale that we used on Earth. Newton explaining the gravity mathematically Every object has a gravitational field around it and attracts surrounding objects. The strength of this … more
Wheatstone Bridge
Wheatstone Bridge Electronic measuring instruments like electronic scales detect and measure the resistance change of sensor material. To increase the sensitivity of measuring instruments, it is necessary to measure minute resistance values changes precisely. In this … more
LC Oscillator
There are fully charged capacitors. What happens if the capacitor draws current into the inductor? What is the similarity between physical vibration and electrical vibration? LC oscillator An LC circuit(also called a resonant circuit) is an … more
Tidal Force
Tidal force Earth is not an object like a point (· ), but a rigid body (●) with a certain volume, so the gravity applied to each part is slightly different. This difference in gravity applies … more
Pressure and Pressing Area
The force applied per unit area is called pressure. If the force applied to any two points is the same, the larger the area, the smaller the pressure. Conversely, the smaller the area, the greater the … more
7-segment display(FND)
7-segment display, FND Parts that place multiple LEDs to display numbers or hexadecimal characters are called Seven Segment Displays or FND (Flexible Numeric Displays). It can display all numbers from 0 to 9 with only seven … more
Uniformly Accelerated Motion
Motion of changing speed When a force of a certain size and direction acts on an object, the object moves at a constant rate of speed. These movements are easy to find around us. For example, … more
Why are Cells Small?
Why are cells so small? Living cells are constantly exchanging substances with their surroundings. Cells have to absorb nutrients and get waste products out. Most cells, including our body, need to absorb oxygen to get energy. … more
Galilean Moons
* This simulation refered the link below for Jupiter’s satellite data. https://en.wikipedia.org/wiki/Galilean_satellite Galilean satellite Jupiter, the largest planet in the solar system, has many moons. Jupiter’s representative moons include Io, Europa, Ganymede, and Calisto. These four … more