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Light speed- Please guide me

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arunvnet

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Many times i heard that if device travel with light speed. but for my understanding
1. is it device having any light sensor ?
2. how the device can recognize the light, will travel with light speed ?
3. which component will detect or sense the light for travelling light speed ?
Kindly get back to me with your view on this ?
 

From science fiction stories we might get the impression that light speed is easy to achieve with physical objects. However it creates a bunch of paradoxical questions such as you ask. Instead for a look at real-life situations have you seen articles telling about problems for NASA scientists trying to manage communications among satellites travelling less quickly, say 1 percent speed of light?
 

Many times i heard that if device travel with light speed...

You need to understand the laws of motion; basically the classical Newton's laws.

The points you need to understand are:

1. Inertial frame;
2. The process of measurement;
3. And the concept of space-time (time and space are basically the same) and non-Euclidean geometry.

For what you are asking, an observer is needed. The speed of an object is seen by an external observer.

Interactions are basically informations that travel at the speed of light.
 

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