| They can be anywhere from too small to be seen with the naked eye to as big as the chips thrown out by a chainsaw. |
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| Thermophilic micro-organisms, bugs who like heat and are too small to be seen by the human eye, begin the decomposition. |
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| Bacteria and viruses are too small to be seen, in fact they have to be in millions before we can recognize them as a colony. |
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| Here you will discover that our sense of smell allows us to experience nanometre-sized things that are too small to be seen with our eyes. |
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| Microscopy is any of a number of techniques that use instruments which produce images of objects too small to be seen with the naked eye. |
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| Other models, such as string theory, propose more dimensions, but those are coiled up too small to be seen. |
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| The chips would be made from silicon or plastic, using microscopic machinery which can fit electric circuits on to objects too small to be seen by the naked eye. |
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| Though they are too small to be seen individually, their total population is so huge. |
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| There are times when an approaching aircraft will be too small to be seen because it is below the eye's threshold of acuity. |
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| Atoms are too small to be seen, but can be represented schematically as spheres of different colours and sizes. |
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| A pattern too small to be seen with the naked eye is printed on Anoto stationery. |
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| One theory is that syndrome X is a disease of small coronary arteries, too small to be seen by angiography. |
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| Astronomers cannot locate it and suggest that it may have broken into pieces too small to be seen. |
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| The soil is full of life and most of it is too small to be seen with the human eye. |
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| Micro-organisms are too small to be seen by the human eye but though very small they are very important. |
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| For example, microscopes make visible objects that are too small to be seen with the naked eye, and binoculars extend our ability to see far away objects. |
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| But most of the details of how a cell functions were too small to be seen. |
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| Imaging would reveal features too small to be seen from Earth, perhaps providing information on lunar surface processes and also arousing public interest. |
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| Bunting Magnetics has new drawer magnets able to catch metal bits too small to be seen. |
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| The microbes, those tiny creatures too small to be seen, feed on the plants and manure in a compost pile, breaking them down into smaller and smaller pieces. |
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| Living things too small to be seen except under a microscope. |
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| In keeping with its secretive character, the Cassin's Auklet has dull, grey-brown feathers all year round. The only flourishes on this nondescript plumage are white eyebrows, which are too small to be seen at any distance. |
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| Any living organism that is too small to be seen by the naked eye such as bacteria, viruses, protozoa, single-celled algae, and many types of fungi. |
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