In the context of the art, architecture, and culture of Ancient Greece, the Classical period, sometimes called the Hellenic period, corresponds to most of the 5th and 4th centuries BC (the most common dates being the fall of the last Athenian tyrant in 510 BC to the death of Alexander the Great in 323 BC).his Classical period saw the annexation of much of modern-day Greece by the Persian Empire, its subsequent independence, and it also had a powerful influence on the Roman Empire and greatly influenced the foundations of western civilization.
Photography gels are precisely colored acetate sheets (overhead transparencies) used to alter the color of lights.There are different reasons for doing this, including for aesthetic effects and contrast reasons.hanks again-I had flash on floor behind me with red gel, flash on keyboard bounced off white paper on screen, and third flash with a home made snoot pointing to Apple logo-I made three A4 pages and got 27 gels for $4.50 Cdn.
Gellan is a popular gelling agent and comes in two varieties, high acyl or low acyl. High acyl gellan typically results in soft, elastic gels while low acyl gellan creates hard, brittle gels. They are often used together to create a variety of textures. They can also be used in spherification.