Lăng kính có tiết diện thẳng ABC, chiết suất n và góc chiết quang A=30 . Một chùm tia sáng hẹp, đơn sắc
được chiếu vuông góc đến mặt trước AB của lăng kính. Để chùm ló sát mặt sau AC của lăng kính thì

Around faucet handle is part of a(n) a. lever b. screw c. inclined plane d. wheel and axle

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.

What is a carrier wave and how does it affect what you hear on the radio