Testing for boiling water

The stick will quiver if held against a boiling billy.

I'm filling in gaps in for April having completed several activities but late in seeing what's in the can.

[Peter H]

Intrepid!

[JackieR]

That's clever

[SandraD]

@peadar @30pics4jackiesdiamond Being the older of the group yes my questions were about the science, they were well answered. I think Gerry enjoyed being re invigorating of our era of questioning.