FUN PALACE 2018 Chladni Moranbah
Make invisible sound waves reveal their hidden beauty with a barbeque plate and a sprinkle of sand.
Activity Details
Type science experiment
Duration 20 minutes
# Deliveries
Duration
Activity Criteria
Learning Outcomes & Facilitator notes
- Fun fact - Ernst Florens Friedrich Chladni (30 November 1756 – 3 April 1827) was a German physicist and musician. He is sometimes referred to as the father of acoustics.
- Interesting fact for a child/teenager – An Odd Name: They’re named for the German physicist Ernest Chladni who popularized them in the mid-1700s. His name is pronounced: kläd’nêz.
- Interesting fact for an Adult – Instruments made of wood, string, and metal move in complex and nonlinear ways; that's partly why the sounds they make are so rich.
- Image – image of Ernst Chladni on one search http://onesearch.slq.qld.gov.au/primo-explore/fulldisplay?docid=TN_bnf_soai_bnf_fr_gallica_ark_12148_btv1b8416446k&context=PC&vid=SLQ&lang=en_US&search_scope=SLQ_PCI_EBSCO&adaptor=primo_central_multiple_fe&tab=all&query=any,contains,Chladni&sortby=rank&facet=rtype,include,images&offset=0
Session Plan
Set out your materials and make sure your equipment is downloaded and working. Ensure that the power is on. Proceed with experiment by; - Plug speaker in and turn on app. - Check volume and vibration, then turn off. - Apply mounting tape to the bottom of the metal plate, making sure its in the centre. - Stick speaker to the metal plate with the mounting tape already applied. - Place speaker back into foam holder. - Pour salt over metal plate, ensuring that it is covered. - Turn on speaker and watch the patterns appear as you try different volumes and amounts of salt.
Materials Req
- Salt
- Speaker
- Mounting Tape
- Thin Metal Plate
- Foam Holder for Speaker
Equipment Req
- Audacity Program
- Electronic Device
- appropriate cords and outlets
- Scissor
