Radioactive decay The radioactive material can collapse its own nucleus structure. At the same time, the nucleus emits some small particles or energy to the outside. The emitted particles and radioactive energy can cause damage to the human body. In … more
Could the cup’s water leak out? From the conclusion, the water on the surface of the cup is derived from the air. In an arid desert, dew does not occur. If you put the ice in the cup, the cup’s … more
In this simulation, The red arrow indicates high temperature, blue indicates low temperature, and purple indicates medium temperature. The temperature values are for your understanding only and may differ from the actual values. The initial temperature of the steam was … more
Charge Distribution on a thin Conductive Plate Charges on the conductor plate are assumed to be (-). The thickness of the conductor plate is assumed to be very thin. Charges on the conductor plate can move freely. Charges of the … more
A heat engine A heat engine is a machine that moves by moving energy from a hot space to a cold space. In this process, the heat engine converts some of the heat energy into mechanical energy. All heat engines … more
Boyle’s J-tube experiment Boyle’s J-tube experiment is an experiment that Boyle did to prove his law. Boyle experimented with pouring mercury into a J-shaped glass tube with one side blocked. At first, the heights of mercury are equal to each … more
This simulation is programmed so that the average velocity of fluid particles flowing through the pipe is constant. What does it mean that the fluid collides against the inner wall of the tube? If the fluid begins to flow in … more
Ionization tendency of metal The tendency of metals to lose electrons and become cations is called the ‘ionization tendency.’ The ionization sequence is an ordered list of ionization trends. The greater the metal’s ionization tendency, the easier it is to … more
Both missionaries and cannibals must cross the river safely. Boats can ride up to three people. If the number of cannibals is more than the number of missionaries anywhere, missionaries will be eaten.
Distance One of the most used concepts is ‘distance,’ which means the total distance actually moved. If you move in zigzag, the actual distance traveled can be quite long, even if the straight distance is short. Displacement ‘Displacement’ is not … more
Koch curve Koch curve is a kind of fractal curve. It appeared in a 1904 paper titled ‘On a Continuous Curve Without Tangents, Constructible from Elementary Geometry’ by the Swedish mathematician Helge von Koch. Suppose there is a case in … more
The Pythagoras tree is a plane fractal constructed from squares. Invented by the Dutch mathematics teacher Albert E. Bosman in 1942. It is named after the ancient Greek mathematician Pythagoras. Fractal’s self-similarity Fractal curves retain their original shape even if … more