این ساعت با استفاده از سایه های انگشت شما زمان را مشخص می کند

What time is it? Your shadow can tell you! This is Shadowplay and it's a simple ring of light on the wall that can tell time using shadows. It was created by the design studio breadedEscalope.

You simply point your finger to the center of the light and the clock then focuses two points of light on your finger. When you take your finger back out, the full light ring returns. It casts two shadows that become the hands on a clock. Brass, oak, and stone versions of the clock were also created. Why ask for the time when your shadow knows already?