Magnetic Field around of a Magnet or Earth

Magnetic Field around Magnet(or Earth)

Magnetic field around magnet The space where the magnetic force of the magnet acts is called a ‘magnetic field.’ The direction of the magnetic field is determined in the direction indicated by the N pole of … more

Pendulum wave

Pendulum Wave

Pendulum wave A ‘Pendulum wave’ is a collective wave-like phenomenon that appears when pendulums (weights) of different lengths are arranged side by side. Because each pendulum has a different period depending on its length, they oscillate … more

Direction of Earth's gravity

Direction of earth’s gravity

Scientific definitions of ‘up’ and ‘down’ We live on the surface of the Earth and are always under the influence of its gravity. When we let go of an object, it falls “down,” and when we … more

Spectrum Analysis of Sound

Spectrum Analysis of Sound

This simulation analyzes the sound around you and displays it as a spectrum. The simulation works by recognizing the surrounding sounds. In the case of PC, please grant permission to use the microphone. Voice data is … more

Doppler effect and redshift

Doppler Effect and RedShift

Doppler Effect By listening to the ambulance’s siren, we can tell if the ambulance is coming or going. When an ambulance approaches with a siren, the sound wave’s wavelength becomes shorter (higher note), and when it … more

Straws and atmospheric pressure

Drinks in a straw aren’t pulled, they’re pushed.

Drinks in a straw aren’t pulled, they’re pushed. When we say ‘straw,’ most people picture liquid being sucked upward. But scientifically, that’s not what happens. The liquid doesn’t rise because of suction; it rises because the … more

압력과 면적의 관계 Pressure and Pressing Area

Pressure and Pressing Area

Pressure is defined as the force applied per unit area. When the same force is applied to two different surfaces, the pressure depends on the size of the area: the larger the area, the smaller the … more

Buoyancy comparison

Buoyancy comparison

Why is the submerged volume important to understand buoyancy? It is so famous that the 3rd-century Greek philosopher Archimedes shouted “Eureka!” and ran out of the bathhouse naked. (What did Archimedes find out? – Quotations from … more

Bimetal

Bimetal

Bimetal Bimetal is a combination of two metals with different degrees of thermal expansion, and when the temperature of the bimetal increases, it bends toward the smaller degree of thermal expansion. Such bimetals keep the temperature … more

Lorentzs Force

Lorentzs Force

Direction of the Lorentz force Conductors in which current flows in a magnetic field are forced to move. The direction of this force is perpendicular to the current and the magnetic field, respectively. More precisely, we … more

Motion Shot

Video Motion Analysis (Screen Pointing)

 Range  X min X max Y min Y max This app is a web-based software that analyzes the motion of objects recorded in video frame by frame. This program analyzes the movement of objects captured on … more