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- https://phys.libretexts.org/Bookshelves/College_Physics/College_Physics_1e_(OpenStax)/18%3A_Electric_Charge_and_Electric_Field/18.00%3A_Prelude_to_Electric_Charge_and_Electric_FieldFranklin demonstrated a connection between lightning and static electricity. Sparks were drawn from a key hung on a kite string during an electrical storm. These sparks were like those produced by sta...Franklin demonstrated a connection between lightning and static electricity. Sparks were drawn from a key hung on a kite string during an electrical storm. These sparks were like those produced by static electricity, such as the spark that jumps from your finger to a metal doorknob after you walk across a wool carpet.
- https://phys.libretexts.org/Bookshelves/University_Physics/Physics_(Boundless)/29%3A_Atomic_Physics/29.2%3A_The_Early_AtomModern scientific usage denotes the atom as composed of constituent particles: the electron, the proton and the neutron.
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/General_Physics_I%3A_Classical_Mechanics/64%3A_The_Standard_Model/64.03%3A_ForcesSome physicists believe that it may be possible to show that all four forces (including gravity) are aspects of a single underlying force, and covered by a theory called the "Theory of Everything". Su...Some physicists believe that it may be possible to show that all four forces (including gravity) are aspects of a single underlying force, and covered by a theory called the "Theory of Everything". Such a theory (which is essentially a grand unified theory plus gravity) has not yet been found, nor is it known whether such a theory even exists.
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/General_Physics_I%3A_Classical_Mechanics/15%3A_Force/15.01%3A_The_Four_Forces_of_NatureWhen you push on something with your hand, for example, you are not really in direct contact with it: the outermost electrons of the atoms at the surface of the object are being electrically repelled ...When you push on something with your hand, for example, you are not really in direct contact with it: the outermost electrons of the atoms at the surface of the object are being electrically repelled by the outermost electrons in the atoms at the surface of your hand.
- https://phys.libretexts.org/Courses/Georgia_State_University/GSU-TM-Introductory_Physics_II_(1112)/03%3A_Electric_Charge_and_Electric_Field/3.01%3A_IntroductionThe gravitational force, another fundamental force, is actually sensed through the electromagnetic interaction of molecules, such as between those in our feet and those on the top of a bathroom scale....The gravitational force, another fundamental force, is actually sensed through the electromagnetic interaction of molecules, such as between those in our feet and those on the top of a bathroom scale. (The other two fundamental forces, the strong nuclear force and the weak nuclear force, cannot be sensed on the human scale.)
- https://phys.libretexts.org/Courses/Prince_Georges_Community_College/PHY_2040%3A_General_Physics_III/09%3A_Atomic_Physics/9.2%3A_The_Early_AtomModern scientific usage denotes the atom as composed of constituent particles: the electron, the proton and the neutron.
- https://phys.libretexts.org/Courses/Skyline/Survey_of_Physics/07%3A_Electricity/7.01%3A_Prelude_to_Electric_Charge_and_Electric_FieldFranklin demonstrated a connection between lightning and static electricity. Sparks were drawn from a key hung on a kite string during an electrical storm. These sparks were like those produced by sta...Franklin demonstrated a connection between lightning and static electricity. Sparks were drawn from a key hung on a kite string during an electrical storm. These sparks were like those produced by static electricity, such as the spark that jumps from your finger to a metal doorknob after you walk across a wool carpet.
