ARLab

Model of various hydraulic devices made by students to demonstrate Pascal's law of liquid pressure..

राजन प्रसाद साह St. Alphonsa's School ARLab

Hans Christian Ørsted discovered in 1820 that an electric current produces a magnetic field.
Ørsted's Discovery
He observed that a compass needle deflected when placed near a wire carrying electric current.
When the current was switched off, the needle returned to its original position.
This showed that electricity and magnetism are closely related.

राजन प्रसाद साह St. Alphonsa's School ARLab