4ESO Física i Química , ARTICLE 86 : Reference system or frame of reference depicts the kind of movement.

Frame of reference: When you are standing on the ground, that is your frame of reference. Anything that you see, watch, or measure will be compared to the reference point of the ground. If I am standing in the back of a moving truck, the truck is now my frame of reference and everything will be measured compared to it.

 - Video about reference system and simple relativity theory.

- Read carefully this webpage and study how important frame reference system is :

   * Frame reference link to read.

- If you are really more interested about frame reference significance, it would be great that you watch the following video carefully at home and learn about Einstein relativity theory that are straightaway related to reference system issue :

                     * Einstein relativity theory and reference systems.