They use microscopes.
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Scientists use tools like electron microscopes and particle accelerators to study tiny particles that are too small to see with the naked eye. These instruments can magnify the particles and provide detailed images and data about their size, shape, and behavior. Scientists also use theoretical models and mathematical equations to study the properties and interactions of these particles.
No, viral particles are generally too small to be seen with a light microscope, which has a limited resolution of around 200 nanometers. Virologists typically use electron microscopes, which have much higher resolution, to observe and study viral particles.
suspension particles can be seen through a microscope
Microscopic particles are so small and hard to see with the human eye that is they are alive their movement would be small making it hard to determine whether they're alive or not.
No, individual particles such as salt and iron filings cannot be seen by the naked eye due to their small size. They are only visible in large quantities or under a microscope.
That phenomenon is called flocculation, which occurs when small particles suspended in a liquid clump together and become visible. It can be caused by the interaction of particles or the addition of a flocculating agent.