Cùng học ngoại ngữ: 4. Light

Pull out Your Pointers Rút bút trỏ la-ze ra nào Finally, high tech stuff! Lasers aren't so high tech anymore. Lasers have been around since...

Using Prisms Sử dụng lăng kính Prisms are a very special type of lens. When refraction is at work in a prism it breaks the beam of visible...

Using Lenses Sử dụng thấu kính Telescopes and microscopes are excellent examples of how lenses are used every day. By using different...

Bending Light with Refraction Ánh sáng cong vì khúc xạ Lenses are pieces of glass that bend light. The easiest thing to think about is lenses...

Refraction Basics Căn bản về khúc xạ When scientists talk about refraction, they use a formula. "n = c / v" "c" is the speed of light in a...

Reflection Basics Căn bản về phản chiếu When a light ray hits an object and bounces off, it is called reflection. When you think of...

Particles and Waves Hạt và sóng During the early 1900's scientists proved that electromagnetic radiation not only has packs of energy (quanta),...

Edges of Visibility Giới hạn của tầm nhìn Although we can't see them with our eyes, some wavelengths of light that bookend the visible spectrum...

Visible Light Colors Màu của ánh sáng thấy đượcWe now introduce you to Mr. Roy G. Biv. Was he a scientist? No. Did he create great optics and...

Types of Electromagnetic Radiation Các loại bức xạ điện từ There are waves of energy and light moving all around us in the form of TV and...

Different Speeds of Light? Tốc độ ánh sáng khác nhau? As far as we know, all types of light move at one speed when in a vacuum. The speed...

Types of LightCác loại ánh sáng To understand light you have to know that what we call light is what is visible to us. Visible light is the...