science diagram round burner flask air bubbles grayscale trace heat classroom experiment bunsen bottemed thermal ex..…
Round bottemed flask with bung and tube. black and white diagram / outline.
Also with ink drop to show thermal e..…
script calligraphy
black bottom science diagram white round flask lineart tube trace classroom experiment with bottemed bung
..…
science outline chemistry air lab laboratory physics apparatus thermal expansion experimant
..…
science diagram metal grayscale thermal expansion
Thermal Expansion..…