ID 159457595 © Mesocyclone70 | Megapixl.com
Sharing is not just caring, it's also about giving credit - add this image to your page and give credit to the talented photographer who captured it.:
class classic classroom college concept demonstration education educative energy equipment experiment explaining explanation force idea illuminated illumination instrument laboratory learning mechanics mode motion oscillate oscillation physics principle school science standing string stroboscope stroboscopic university vibrate vibrating vibration wave