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Microscopes

Microscopes are used to look at things that are not visible to the naked eye. This category would demonstrate how microscopes work and information about different kinds of microscope.

4,322 Questions

What does the power of a microscope depend on?

Depends which type of microscope we are talking about. The common compund light microscope has a resolving power of 0.2 micrometer or 0.0002 millimeter. In comparison the human eye's resolving power is 0.1 millimeter.
Resolving power is the minimum distance between two objects or particles such that the objects are distinguishable. So for example in the case of human eyes with resolving power of 0.1 millimeter, if you bring two objects any closer to each other than 0.1 mm, our eye cannot tell if they are two separate objects or not.
Last but not least, the lower the resolving power, the higher the resolution. So because a compound microscope has a lower resolving power than human eye, it has a higher resolution.

Why a microscope should be stored in low power objective lens?

Storing a microscope with the low power objective lens in place helps protect the lens and prevents accidental damage or contamination during storage. The low power lens is less delicate compared to other high-power lenses, making it a safer option for storage to ensure the microscope remains in good condition for future use.

Who was responsible for the further development of the microscope during the 19th century?

The method of pefecting glass lenses brought about a practical compound microscope during this time period. No on eperson or team can take full credit. Some significanrt contributors were:

Bausch & Lomb

Walter Bulloch

Charles Dalton

T.H. McCallister

John Sidle

Charles Spencer

Robert Tolles

Yawman & Erbe Hope this helps,

Roadkill

Do not allow direct sunlight to fall on what part of a microscope?

Do not allow direct sunlight to fall on the microscope stage or on the lenses, as it may damage them or cause overheating. It is recommended to keep the microscope in a shaded area or use a microscope cover when not in use to protect it from direct sunlight.

Does a microscope turn the object upside down and backwards?

Yes, in a compound microscope, the image is upside down and reversed left to right. This is due to the way the lenses refract and bend light rays. However, the image can be further adjusted using additional lenses to correct the orientation.

What is the Name of a microscope that allows three demensional viewing?

A microscope that allows for three-dimensional viewing is called a stereo microscope. This type of microscope provides a 3D view of the specimen by using two separate optical paths for each eye, creating a stereoscopic image.

What would cause an image to appear blurred under a microscope?

An image can appear blurred under a microscope due to improper focusing, contamination on the microscope lens or slide, incorrect magnification setting, or presence of air bubbles in the viewing field. Proper cleaning and adjustment of the microscope components can help improve image clarity.

A microscope is an instrument that makes distant objects look larger?

Actually, a microscope is an instrument that magnifies tiny objects, allowing them to be viewed in greater detail. It works by using lenses to focus light and create an enlarged image of the object being observed.

Always carry a microscope with one hand on the and the other hand on the?

Always carry a microscope with one hand on the base and the other hand supporting the arm. This helps ensure the stability and safety of the microscope while you are moving it. Avoid carrying it by the stage or the eyepiece to prevent damage to the delicate parts of the microscope.

What does the iris do on the microscope?

The iris on a microscope controls the amount of light entering the microscope objective lens. By adjusting the iris, you can regulate the brightness and clarity of the specimen being observed.

How do modern microscopes use lenses to bend light?

Modern microscopes use a combination of objective and eyepiece lenses to bend light through refraction. The objective lens collects and refracts light from the specimen, while the eyepiece lens further enlarges the image for the viewer. By manipulating the curvature and thickness of these lenses, microscopes are able to magnify the image of tiny objects for observation.

Describe the Procedure for focusing a microscope using the coarse and fine adjustment knobs?

  1. Start by placing a slide on the stage and using the coarse adjustment knob to bring the slide to a point where you see a blurry image.
  2. Use the fine adjustment knob to slowly and gently turn until the image becomes clearer and in focus.
  3. Continuously adjust the fine adjustment knob until you obtain the sharpest image possible.

Why do you adjust the coarse-adjustment knob?

The coarse adjustment knob is used to bring the specimen into approximate focus quickly. It moves the objective lens or the stage up and down in larger increments to roughly focus the image before using the fine adjustment knob for fine-tuning the focus.

What microscope does not invert the image?

A stereo microscope, also known as a dissecting microscope, does not invert the image. It provides a three-dimensional view of the specimen and is commonly used for observing larger objects at lower magnifications with a upright, non-inverted image.

On a microscope what is a ocular tube?

The ocular tube on a microscope holds the eyepiece, which is where you look through to view the magnified specimen. It connects the eyepiece to the body of the microscope and serves as a pathway for the light to reach your eyes.

What is the principle of bright field microscopy?

Bright field microscopy is a basic technique where light is transmitted through a specimen with little contrast, resulting in a bright background. The specimen appears dark against the bright background, making it suitable for observing stained samples or transparent objects. This technique is commonly used in biological studies to visualize cells and tissues.

Why is it necessary to adjust the amount of light after changing objective lenses?

Adjusting the amount of light after changing objective lenses is necessary because different lenses may transmit light differently due to their different magnification levels and optical properties. This adjustment ensures that the specimen remains properly illuminated and in focus for accurate observation and image quality.

What is the function of ocular?

The function of the ocular (eyepiece) is to magnify the image produced by the objective lens in a microscope or telescope, allowing the user to see the image more clearly. It typically provides a fixed magnification power for the device.

What do microscopes use to change the appearance of an object?

Microscopes use lenses to change the appearance of an object. By adjusting the lenses, the microscope can magnify or reduce the size of the object and bring it into focus for clear viewing.

Microscopes produce images by focusing light rays or beams of?

electrons onto a specimen. The specimen interacts with the light or electrons, producing an image that can be magnified and viewed through the microscope's eyepiece or on a digital screen. This allows scientists to observe tiny details and structures that are not visible to the naked eye.

Two parts of the microscope that regulate the amount of light visible through the ocular are the?

iris diaphragm and condenser. The iris diaphragm controls the amount of light coming from the light source, while the condenser helps focus and direct this light onto the specimen. Adjusting these parts ensures optimal illumination for clearer observation.

What is the distance from the bottom of the objective lens to the specimen?

The distance from the bottom of the objective lens to the specimen in a microscope is called working distance. It varies depending on the type and magnification of the lens, but typically ranges from a few millimeters to a few centimeters. Maintaining the correct working distance is crucial for achieving sharp focus and clarity in the image.

What are the functions of a revolving nose piece?

A revolving nosepiece on a microscope allows for easy switching between different objective lenses to change the magnification levels. It also helps to keep the lenses organized and in place.

Who invented the optical microscope?

The optical microscope was likely invented by Hans Lippershey, Zacharias Janssen, and Hans Janssen in the late 16th century. These early microscopes used lenses to magnify small objects.

What is a high power objective lens?

A high power objective lens is a microscope lens with a high magnification level, used for viewing specimens in fine detail. It allows for closer inspection of specific features or structures of the specimen.