Javalab Free interactive science simulation website for school. Simulates various natural phenomena Includes Physics, Chemistry, Earth, Astronomy, Biology, Measurment, Mathmatics… Based on HTML5 Available on mobile devices and tablets also No more…
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* We assume an ideal transformer where the excitation current is “0”. A transformer is a device for simply changing the voltage of an alternating voltage. Transformers make it easy to change…
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Definite integral Definite integral is a way to find the area of a graph. The only simple way to get the area as the product of width and length is for the…
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Kepler and Tycho Brahe There is an astronomer who must be mentioned before talking about Kepler (Johannes Kepler 1571 ~ 1630). That’s Tycho Brahe. Tycho Brahe (1546-1601) is a famous Danish astronomer.…
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* Wear gloves when handling mercury. Torricelli’s Experiment The first person to measure the magnitude of air pressure is Italian scientist Toricelli. He was filled with mercury (Hg) in a glass tube…
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This simulation supports both pinch zoom and mouse scrolling. We recommend using the Chrome browser. (to get more processing speed) Imaginary number An imaginary number is consisted with a number that…
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Three Primary Colors of Light Red, green, and blue are called the three primary colors of light. By combining the three colors of light properly, you can create any color. Red +…
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How to use the Heart Pulse Detector Place your finger on the camera and make the entire camera screen red. This application uses the phenomenon that the color of the finger periodically…
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Chromosome If you look at the onion root under a microscope, you can see cells of different shapes and sizes, such as cells with a clear nucleus, cells that appear to be…
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Doppler Effect We have heard an ambulance sirens and felt that the ambulance is getting closer. When the ambulance approaches, the sirens sound higher, and when they move away, the sirens sound…
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Star brightness and apparent magnitude Hipparchus of ancient Greece distinguished the stars in the night sky according to their brightness. He classified the brightest star as ‘magnitude 1’ and the darkest star…
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You can drag the path of light. Refraction is the bending of a wave caused by a change in its speed as it moves from one medium to another. This occurs because…
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