Have you ever wondered how your phone can connect to WiFi or Bluetooth without any wires? And have you ever thought about what it would take to stop those signals from getting through?Come and find out! Use a signal detector to uncover the wireless signals around you, then put different materials to the test. Will a plastic sheet make a difference? Can aluminium foil block the signal? Make your prediction, try it yourself and see what happens.Through this hands-on experiment, visitors of different ages can explore the invisible world of wireless communication and discover what happens when signals meet different materials.Can you find the best way to block an invisible signal?Deze activiteit is in het EngelsAthira Rajan