![portrait par Olivia Ivany](/sites/default/files/styles/career_image/public/2023-04/Olivia%20Ivany.jpg?itok=kIaJNNW2)
Olivia Ivany
Career Profiles
Diagnostic Medical Sonographer
Michel Leger (he/him/they)
Career Profiles
Hydrographer
![Ashley Noseworthy avec l'océan derrière elle](/sites/default/files/styles/career_image/public/2022-01/Ashley%20Noseworthy.jpg?itok=EBHwYaZD)
Ashley Noseworthy
Career Profiles
CEO/Founder of Edgewise Environmental
![Cuvier's beaked whales](/sites/default/files/styles/resource_card_image_360x300_/public/2022-02/Beaked_Whales_Main.png?itok=2TdHGmsC)
Are Whales Beaching Themselves Stressed By Sonar?
STEM Explained
Read about why sonar could be causing some whales to beach themselves.
![Amy King dans un studio d'enregistrement](/sites/default/files/styles/career_image/public/2020-04/Amy%20King.jpg?itok=gT1IjzDr)
Amy King
Music Producer / Recording Engineer
![Ultrasound treatment on knee](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/ultrasound_treatment_knee.jpg?itok=093wi43j)
Ultrasonography
Backgrounders
Learn about the history, function, uses, benefits and risks of Ultrasonography as a medical imaging technology.
![Sound waves](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/Sound_wave_icons.jpg?itok=GMAHUQyT)
What is Sound and How do we Hear it?
Backgrounders
Learn how sound travels in waves and how it is measured in this backgrounder.
![The Electronic Sackbut Synthesizer](/sites/default/files/styles/resource_card_image_360x300_/public/2020-01/Electronic_Sackbut_Synthesizer.jpg?itok=jubC6sRr)
Who Created the Electronic Synthesizer?
STEM Explained
A Canadian researcher built the first voltage-controlled synthesizer in the 1940s.
![Replica of the earliest wooden model stethoscope](/sites/default/files/styles/resource_card_image_360x300_/public/2020-02/stethoscope_replica_ingenium.jpg?itok=RgHTg8L2)
Stethoscope Replica
Interactives
Using stethoscopes, doctors can use sound waves to detect various health issues. Learn how this device has evolved since it was invented in 1816!
![Sound waves and sound-producing devices. Image © jop_pop, istockphoto.com](/sites/default/files/styles/resource_card_image_360x300_/public/2019-09/Sound%20waves%20and%20sound-producing%20devices.jpg?itok=6ATkmIUM)
Sound vs. Noise
STEM Explained
What is the difference between sound and noise? How do they affect your hearing? And is noise always a bad thing?
![How does sound travel?](/sites/default/files/2019-08/how-does-sound-travel.jpg)
How does sound travel?
Hands-on Activities
Try out this cool activity to hear sound vibrations.