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In the years that followed, as better equipment and techniques were developed, many other people were able to measure the speed of light more accurately. With the resources of today's technology, we can measure it to an incredibly high precision. For instance, astronauts have attached a mirror to a rock on the moon; scientists on earth can aim a laser at this mirror and measure the travel time of the laser pulse--about two and a half seconds for the round trip. (The idea behind this experiment is not so different from Galileo's, if you think about it...) And anyone who measures the speed of light, at any time, using any method, always gets the same result: just slightly less than 300,000 kilometers per second.
http://www.Colorado.edu/physics/2000/waves_particles/lightspeed_evidence.html
What else can I help you with?
The velocity of light was first measured by?
The velocity of light was first measured by Ole Rømer, a Danish astronomer, in 1676. He used observations of the moons of Jupiter to deduce the finite speed of light.
What is the formula for time when dealing with velocity and acceleration?
Velocity is measured in m/s and the direction is mentioned. Speed is also measured in m/s but the direction is not mentioned.Acceleration is measured in m2/s; it is the rate of change of velocity.
Is velocity and acceleration measured in the same units?
No, velocity is typically measured in units like meters per second (m/s), while acceleration is measured in units like meters per second squared (m/s^2). This difference reflects the distinct physical quantities they represent - velocity being the rate of change of position and acceleration being the rate of change of velocity.
Which has more momentum heavy truck light truck or do they both have the same momentum?
A truck that is more massive with the same velocity as the truck that is less massive will definitely have more momentum. This is illustrated in the equation for momentum:p = mvWhere p is momentum which is measured in Newton seconds, m is mass which is measured in kilograms, and v is velocity, measured in meters per second. If you plug in a larger mass for that same equivalent velocity, it will accordingly have more momentum.Also, if you just think about it, what would be harder to move: something with more mass or something with less mass?
Velocity is measured in what?
Velocity measured in displacement over time units, such as m/s, km/h, mi/h .That gives you the size of the velocity, also called "speed"In order to make a velocity out of a speed, you must also indicate the directionof the speed.
The velocity of light was first measured by?
The velocity of light was first measured by Ole Rømer, a Danish astronomer, in 1676. He used observations of the moons of Jupiter to deduce the finite speed of light.
Velocity of light was first measured by?
By Roemer, observing the moons of Jupiter.
Velocity is the combination of?
Velocity is measured by a combination of speed and direction.
What is height measured in?
it can be. if you wanted to.
How is gravitational acceleration measured?
final velocity - initial velocity divided by time
What is velocity-time relation?
Velocity is measured as distanced traveled over time
Constant speed is measured by what?
Velocity is measured in meters/second in the S.I. system.
When do you know an objects velocity?
When you have calculated or measured it.
How are the levels of hurricanes measured?
wind velocity
How are waves measured?
It depends, if you mean light or sound waves, for example, there are a variety of factors to be measured: The length of a wave from peak to peak is represented with lambda. You can also measure velocity of a wave (how fast and in what direction it is moving). Frequency of light effects the color of the light, and frequency of sound effects its pitch.
Suppose velocity is measured kmhr and time is measured in hourswhat is that unit of acceleration?
If velocity is km/hr and time is in hours then acceleration will be in km/hr2
What is the average velocity of this stream as measured by the virtual stadia rod and velocity sensor?
.64
