A micrometre , nanometre , picometre , femtometre , attometre , zeptometre and yoctometre.
A micrometre is one millionth of a metre. Smaller units than a micrometre are:a nanometre (1000 nanometres in one micrometre)a picometre (1000 picometres in one nanometre)a femtometre (1000 femtometres in one picometre)an attometre (1000 attometres in one femtometre)a zeptometre (1000 zeptometres in one attometre)a yoctometre (1000 yoctometres in one zeptometre)
10 yoctometer is equivalent to 1/10 of the diameter of an electron, and1/100 00 the diameter of a proton or neutron also10 yoctometres=1/100 zeptometre (zm).
There are: decimetre, centimetre, millimetre, micrometre, nanometre, picometre, femtometre, attometre, zeptometre, yoctometre ... oops that's 10 units smaller than a metre.
A thousandth of a micrometre is a nanometre. A thousandth of that is a picometre. A thousandth of that is a femtometre. A thousandth of that is a attometre. A thousandth of that is a zeptometre. A thousandth of that is a yoctometre. There is also 1/10 nanometre, which is known as the Angstrom unit. An alternative answer to the question is, half a micrometre, a thrid of a micrometre, a quarter of a micrometre etc.
There are no first five because there is really no first: you can always use a smaller unit. In terms of reasonably well known prefices, the answer could be: yoctometre = 10-24 metres zeptometre = 10-21 metres attometre = 10-18 metres femtometre = 10-15 metres picometre = 10-12 metres. But, the first could be defined as the Planck length = 1.616199*10-35 metres. This is the smallest measurable distance.
no * * * * * Of course there are! 1 micrometre (or micron) = one thousandth of a millimetre, 1 nanometre = one millionth of a millimetre 1 picometre = one billionth of a millimetre 1 femto = one trillionth of a millimetre 1 attometre = one quadrillionth of a millimetre 1 zeptometre = one quintillionth of a millimetre 1 yoctometre = one sextillionth of a millimetre and also 1 Planck's length = 162 nonillionth a millimetre (approx)
There are very many. From the largest to the smallest, those with a specific name are,yottametre (septillion metres), zettametre (sextillion), exametre (quintillion),petametre (quadrillion), terametre (trillion), gigametre (billion),megametre (million), kilometre (thousand), hectometre (hundred), decametre (ten),metre,decimetre (tenth), centimetre (hundredth), millimetre (thousandth), micrometre (millionth),nanometre (billionth), picometre (trillionth), femtometre (quadrillionth),attometre (pentillionth), zeptometre (sexmillionth) and yoctometre (septillionth).
millimeter(mm): 10^-3 m Micrometer: 10^-6 m NanoMeter: 10^-9 m Angstrom: 10^-10m Picometer: 10^-12m The Angstrom isn't a recognized unit within the SI system. a femtometre is 1 x 10-15 metres an attometre is 1 x 10-18 metres a zeptometre is 1 x 10-12 metres a yoctometre is 1 x 10-24 metres
Answer1000 yoktometres - 1 zeptometre -.000000000001m 1000 zeptometres - 1 attometre -.00000000001m1000 attometres - 1 femtometre -.0000000001m1000 femtometres - 1 picometre -.000000001m1000 picometres - 1 nanometre -.00000001m1000 nanometres - 1 micrometre -.0000001m1000 micrometres - 1 millimetre -.000001m10 millimetres - 1 centimetre -.001m10 centimetres - 1 decimetre -.01m10 decimeters-1 meter-.1m10 metres - 1 kilometre -1m100 dekameters-1kilometer-10m1000 kilometres - 1 megametre -100m1000 megametres - 1 gigametre -10000m1000 gigametres - 1 terametre -1000000m1000 terametres - 1 petametre -100000000m1000 petametres - 1 exametre -10000000000m1000 exametres - 1 zeptometre -1000000000000m1000 zeptometres - 1 yoktometre -100000000000000m(edits by UBERnoob1098)note:third set refers to one of the first set compared to meters
The only thing I know that is less than a centimeter is a millimeter. Nanometer The picometer is smaller than that
An atom is pretty small. You can't even see one by looking though an ordinary microscope. An atom is the smallest unit of any basic element such as carbon, iron, oxygen, etc.However, even atoms are made of even smaller things, such as the circulating electrons in atoms, and the corresponding central nucleus of protons and neutrons.Protons and neutrons are composed of even smaller particles called quarks, leptons bosons etc which are considered to be the basic constituents of matter. But we also have gluons, which are elementary 'force particles' which enable 'matter particles' to interact! In fact, there are dozens of sub-atomic particles. (See links below)HOWEVER! It could also be said that there is nothing that is the smallest thing in the world because it is always made up of something!EVEN SO, with regard to this particular question, we are endeavouring to identify the smallest known thing in the world! It seems neither possible nor appropriate to provide information about things which are unknown.PERHAPS there ARE particles that are even smaller than those already identified by scientists. It would seem logical to reason that everything is made of something smaller. When we know what these smaller components are, they can be added to the list of smallest (known) things.ON THE OTHER HAND, maybe there is actually a fundamental 'thing,' that tiniest of specks that is almost nothing! Such an elementary particle, something which cannot be divided or has no sub-structure, MUST be the smallest actual thing in the world, apart from 'nothing,' because nothing is the smallest thing in the world!Further informationStraight out of the imagination of scientists came the answer to "What is the smallest thing in the world?" They called it the 'God Particle.' While we have nothing to allow us to see it (or any chance of something that will help us see it any time soon) we can doubtless agree, everything must be made of something.The 'god particle' apparently makes everything, and is made of nothing. Basically it is the science version of god. Many believe that we (humanity) will never see a god particle because enquiring minds have always had, and always will have, the insatiable thirst to know what is bigger, smaller, further away, more indestructible, stronger, etc. than what we already know.For more information, see 'Related links' below.