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**Just Chat! / Can anyone help to give a mental construct of a vector function?**

« **on:**03/07/2024 11:11:02 »

In electromagnetics the following identity is very useful: ∇x∇xA=grad(divA)-laplacianA. Things like divergence, curl and gradient are easily visualised as outflow, rotation and directional rate of change but I cannot visualise the "curl of a curl of a function". I need a mental visualisation or construct to get a full understanding but I realise this is not always possible as some maths is too abstract to enable a mental picture. Any thoughts?