Some trees exude a sticky sap that can immobilize bugs, leaves, seeds, and other ancient life forms. If these ensnared creatures are buried in the right sedimentary conditions, the sap transforms into a soft material called copal. Over millions of years of underground heat and pressure, copal polymerizes into hardened amber. After this amber sample preserved the insect, [Brian] Berger suggests that it became “opalized.”
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, or even use Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for MakeCode, CircuitPython, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.