Who discovered there are small particles inside the atom?
singleAnswer
J. J. Thomson Sir Joseph John Thomson OM PRS Sir Joseph John Thomson
Subatomic particle
small particles inside the atom
Subatomic particle Atom History of subatomic physics Elementary particle Atomic nucleus Particle accelerator Particle Particle physics List of particles Brownian motion
<b>In</b> the physical sciences, subatomic <b>particles</b> are <b>smaller</b> than <b>atoms</b>. They can be 
composite <b>particles</b>, such as the neutron and proton; or elementary <b>particles</b>,&nbsp;... Though the word <b>atom</b> originally denoted a <b>particle</b> that cannot be cut <b>into</b> 
<b>smaller particles</b>, <b>in</b> modern scientific usage the&nbsp;... Increasingly <b>small particles</b> have been discovered and researched: they include 
molecules, which are constructed of <b>atoms</b>, that <b>in</b> turn consist of subatomic&nbsp;... <b>In particle</b> physics, an elementary <b>particle</b> or fundamental <b>particle</b> is a subatomic 
<b>particle</b> with ... Subatomic constituents of the <b>atom</b> were identified <b>in</b> the early 
1930s; the electron and the proton, ... This inelastic scattering suggests that the 
charge <b>in</b> the proton is not uniform but split among <b>smaller</b> charged <b>particles</b>: 
quarks. Classical images of separate <b>particles</b> fail to model known charge distributions <b>in</b> 
very <b>small</b> nuclei. A more accurate image is that the spatial distribution of&nbsp;... Because the target of the <b>particle</b> beams of early accelerators was usually the 
<b>atoms</b> of a piece of matter, with the goal being to create collisions with their nuclei 
<b>in</b>&nbsp;... <b>In</b> the physical sciences, a <b>particle</b> is a <b>small</b> localized object to which can be 
ascribed several ... These <b>particles</b> are studied <b>in</b> chemistry, as well as <b>atomic</b> 
and molecular physics. The <b>smallest</b> of <b>particles</b> are the subatomic <b>particles</b>, 
which&nbsp;... <b>Particle</b> physics is a branch of physics that studies the nature of the <b>particles</b> that 
constitute matter and radiation. Although the word <b>particle</b> can refer to various 
types of very <b>small</b> objects ... <b>In</b> practice, even if &quot;<b>particle</b> physics&quot; is taken to 
mean only &quot;high-energy <b>atom</b> smashers&quot;, many technologies have been 
developed&nbsp;... <b>Atoms</b> are the <b>smallest</b> neutral <b>particles into</b> which matter can be divided by 
chemical reactions. An <b>atom</b> consists of a <b>small</b>, heavy nucleus&nbsp;... Brownian motion or pedesis is the random motion of <b>particles</b> suspended <b>in</b> a 
fluid resulting ... You will see a multitude of <b>tiny particles</b> mingling <b>in</b> a multitude of 
ways... their ... <b>In</b> this way Einstein was able to determine the size of <b>atoms</b>, and 
how many <b>atoms</b> there are <b>in</b> a mole, or the molecular weight <b>in</b> grams, of a gas.
John Dalton
Atom