Psychrometer(hygrometry)

Psychrometer(hygrometer)

hygrometer It is a simple device that allows you to determine the humidity by measuring the difference in how much water evaporates. Compared to a simple structure, humidity can be measured relatively accurately. Before electronic hygrometers … more

Addition of Force

Addition of Force 2

Three elements of force When a force acts on an object, the object’s motion varies depending on the Three elements of force. That is the magnitude, direction, and point of action. Therefore, when displaying a force, … more

Pythagorean Theorem

Pythagorean Theorem

Pythagorean theorem Assuming that the three sides of a right triangle are a, b, c, and the longest side is c, the Pythagorean theorem is that the equation a²+b²=c² is always true. The equation a²+b²=c² represents … more

Flame Test Simulation

Flame Test

* This simulation take the spectral data from NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY. When heat is applied to the atoms, some electrons can have high energy levels and fall to the lower levels. Some electrons … more

금성의 위상

Phase of Venus

Venus’ changes in phase and size are strong evidence of ‘Heliocentrism.’ Venus looks like a crescent moon or a full moon, depending on its angle to the sun. Venus is large when it looks like a … more