What is Launch angle: Definition and 54 Discussions

In fiber optic telecommunications, the launch angle has the following meanings:

The angle, with respect to the normal, at which a light ray emerges from a surface.
The beam divergence at an emitting surface, such as that of a light-emitting diode (LED), laser, lens, prism, or optical fiber end face.
At an end face of an optical fiber, the angle between an input ray and the fiber axis. If the end face of the fiber is perpendicular to the fiber axis, the launch angle is equal to the angle of incidence.In baseball, the "launch angle" is the angle, with respect to the ground level at home plate, at which a batted ball leaves the bat.

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  1. S

    Very vague question about projectile launch angle

    The launching speed of a certain projectile is 5.2 times the speed it has at maximum height. What is the elevation angle at launching? Could someone just give me a starting point or a hint in the right direction? I know that the horizontal velocity doesn't decrease, and the vertical...
  2. I

    Deriving a Launch Angle Equation - Projectile Motion -

    Deriving a Launch Angle Equation -- Projectile Motion -- Please Help This is physics in the area of projectile motion. My class and I are doing a lab where we have to calculate the launch angle in order to perform a successful lab. The experiment is as follows: the projectile launcher releases...
  3. S

    Trouble with Proof of Optimal Launch Angle

    Here is my problem, can anyone help me out? Prove the maximum range of a skier going down a ski jump is given by (theta) = 45degrees - phi/2 , where theta = optimal launch angle , phi = slope angle of take off with respect to the incline of the hill. I have the following equations to use...
  4. HBar

    Find Optimum Launch Angle For Distance in Physics Class Project

    My physics class project is to construct a catapult. My question is what is the optimum launch angle for distance. This was posted awhile back by someone else, but i can't find the post again. I think it said that because of air resistance an angle slightly above 45 degrees is optimum for...
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