What are electrons, protons and neutrons made of?
protons are made of 2 ups and 1 down quark neutrons are made of 1 up and 2 down quarks electrons are their own elementary particle…. http://www.neutron.anl.gov/hyper-physics… http://library.thinkquest.org/18188/engl… http://abyss.uoregon.edu/~js/ast123/lect… if you’re a believer in string theory, then ultimately the elementary particles are made of very tiny 2 dimensional pieces of energy that behave like strings that are anchored in a membrane (called a brane) that cuts through n dimensional space. where n maybe 6, 7 … maybe 11 dimensions….. here’s a link for string theory if you’re interested…. http://www.superstringtheory.