Check out this video clip from last week's UL FSRI Fire Dynamics for Structural Firefighting "train the trainer" course hosted by Philadelphia Fire Department. UL FSRI Research Engineer Keith Stakes is seen here demonstrating how a hose stream impacting the ceiling at a steep angle distributes water over the ceiling and four walls. As the angle of the ceiling impingement is reduced, the water flows along the ceiling and down the back wall. Learn more about this demonstration through the results

11K views · 76 reactions | Did you know that you can create fireworks in the water? Check out our experiment and then try it out at home! | Esplora Interactive Science Centre | Facebook

88M views · 376K reactions | The fire burned UNDER WATER!?  He...