MIDI, or Musical Instrument Digital Interface, is a technical standard that allows hardware instruments to connect and interface with computers. It is a computer language that contains instructions for playing music, such as pitch and...

This video explains the basics of sound and how it is produced, transmitted, and perceived. Explore the physics of sound and acoustics. Acoustics is the study of mechanical waves and how they move through gas, liquids, and solids....

The Ancient Theatre of Epidaurus is a theatre in the Greek city of Epidaurus, located on the southeast end of the sanctuary dedicated to the ancient Greek God of medicine, Asclepius. It is built on the west side of Cynortion Mountain,...

Learn how a radio works, from transmitting electrical energy through radio waves to converting them back into audio for the user to listen to. Understand how signals are encoded and decoded using modulation techniques, as well as the...

The Theatre of Dionysus Eleuthereus is a major theatre in Athens, built at the foot of the Athenian Acropolis. Dedicated to Dionysus, the god of plays and wine (among other things), the theatre could seat as many as 17,000 people with...

The theatre of Assos in Asia Minor in Turkey, It was discovered that the theatre which had been set up on the south slope of the ancient city across Lesbos was destroyed during an earthquake. The theatre with 2500 people capacity had...