You might enjoy the first "How to remember sizes" section of this my page[1] (very slowwwwly loading - it wasn't intended to be public). The microview/nanoview

You might enjoy the first "How to remember sizes" section of this my page[1] (very slowwwwly loading - it wasn't intended to be public). The microview/nanoview pair of story frames provide a tangible context for handling things down to atoms, with or without numbers. Though, "barely tested implies barely works". [1] http://www.clarifyscience.info/part/Atoms http://www.clarifyscience.info/part/Atoms