in this range
human eye can only see 0.1 mm
20 microns
The ovum is the largest cell in the human body, typically visible to the naked eye without the aid of a microscope or other magnification device.The smallest is the male sperm cell, it is one-tenth of the diameter of a human hair.Answered By: Ali Sabah Al-Takmachi, College: Medicine, University of SharjahWhat you said is right.. but, you should mention the sizes also, 2.5 to 3.5 for the sperm and 120 to 150 microns for the ovum. Thank You.
Human egg or ovum is about the size of this period . Ostrich egg about the size of a soft-ball. Both are single cells but eggs are specialized in that they have the nutrients necessary to begin cell division and make a new organism contained within (once fertilized). Technically the egg is really different parts - the white and the yolk are nutrient sacs and are not necessarily part of the cell. Normal cells can't get that big since they have to get materials in and out.
You can see the Thorax and the Abdomen in the Torso
because cells are too small to see with the human eye
A couple of minuts. No blood-flow to the brain will cause death.
A 20 micron particle is not visible with the naked eye. The smallest particle visible to the naked eye is 40 microns. To give you some perspective, a piece of hair's width can range from 40 to 120 microns.
100 um
A sperm cell is the smallest cell found in the human body. The size of a sperm cell's tail is around 50 micrometers in length.
The ovum is the largest cell in the human body, typically visible to the naked eye without the aid of a microscope or other magnification device.The smallest is the male sperm cell, it is one-tenth of the diameter of a human hair.Answered By: Ali Sabah Al-Takmachi, College: Medicine, University of SharjahWhat you said is right.. but, you should mention the sizes also, 2.5 to 3.5 for the sperm and 120 to 150 microns for the ovum. Thank You.
http://www.fdpp.com/FAQ.htm "Actually there isn't any since a strainer is, in reality, a coarse filter. The question is then one of semantics. Generally it is assumed that if the particle to be removed is not visible to the naked eye, the unit is filtering, and if the particle is visible, the unit is straining. The average human eye can detect a specific particle between 50 and 70 micros. Most people cannot see anything smaller than 325 mesh, or 44 microns. Since 200 mesh is equivalent to 74 microns, a general rule would be that if the screening device is coarser than 200 mesh, it is a strainer and if it is finer than 200 mesh it is a filter." - Factory Direct Pipeline Products Website
Aphid fish are the smallest type of fish that can be seen by the naked eye (bare eye-no glasses or microscope).
Walking around naked should be a human right, because humans are naked in their natural state.
A particle is an atom which cant be seen by the naked human eye, everything is made up of: in solids; gasses and liquids. Each atom contains electrons, protons and neutrons, which is what gives each particle its properties. Solids tend to have more compact particles where as gasses have less.
No. Vaccinia is "large" ... for a virus, which still means "tiny" compared to any ordinary human scale. The smallest things visible to the naked eye are on the order of 10-4 m; vaccinia is well under 10-6 m ... over a hundred times too small to see. It's just barely larger than the smallest thing visible with an optical microscope
No, the human cannot see ultraviolet rays with the naked eye.
Usually naked.
Nothing was really invented by using a microscope, only "found out". I don't know if this is what you meant, but cells, molecules, atoms, and any small particle too little to see with the naked human eye were found out, though they were probably already there. Hope it helped :)