Ocular objectivevs magnification

Please take a few minutes to fill out a brief survey about your experience using the Virtual Edge: https://docs.google.com/forms/d/1yGbkF0KM92WBSk-IgS-EkjxkTKTQwhzuXmDsVpwRDoU/viewform

Objectivelens

Please note you are leaving Candid Money, a financial guidance site not regulated by the Financial Conduct Authority, to go to Candid Financial Advice, a financial adviser that is authorised and regulated by the Financial Conduct Authority.

One way to change the refractive index is by staining the specimen.  Another is to use immersion oil.  While we want light to refract differently between the specimen and the medium, we do not want to lose any light rays, as this would decrease the resolution of the image.  By placing immersion oil between the glass slide and the oil immersion lens (100X), the light rays at the highest magnification can be retained.  Immersion oil has the same refractive index as glass so the oil becomes part of the optics of the microscope.  Without the oil the light rays are refracted as they enter the air between the slide and the lens and the objective lens would have to be increased in diameter in order to capture them.  Using oil has the same effect as increasing the objective diameter therefore improving the resolving power of the lens.

Objectivelens microscope function

Total magnification: In a compound microscope the total magnification is the product of the objective and ocular lenses (see figure below).  The magnification of the ocular lenses on your scope is 10X.

Ocularlens magnification

Parfocal: the objective lenses are mounted on the microscope so that they can be interchanged without having to appreciably vary the focus.

Immersion Oil:  Clear, finely detailed images are achieved by contrasting the specimen with their medium.  Changing the refractive index of the specimens from their medium attains this contrast.  The refractive index is a measure of the relative velocity at which light passes through a material.  When light rays pass through the two materials (specimen and medium) that have different refractive indices, the rays change direction from a straight path by bending (refracting) at the boundary between the specimen and the medium.  Thus, this increases the image’s contrast between the specimen and the medium.

The Virtual Edge by http://www.uwyo.edu/virtual_edge/ is licensed under a Creative Commons Attribution-Noncommercial-Share Alike 3.0 United States License

The costs of private medical care when you're not admitted to hospital. Not always covered by private medical insurance policies.

Ocular objectivemicroscope

Note: the calculator assumes you have already used your personal savings & dividends allowances when selecting a tax rate.

Resolving power or resolution: the ability to distinguish objects that are close together.  The better the resolving power of the microscope, the closer together two objects can be and still be seen as separate.

Assumes a fixed annual return throughout, in practice this will likely vary. Does not take account of capital gains tax.

Ocular objectiveexample

© Candid Money Limited 2009-2024 This site is not authorised or regulated by the Financial Conduct Authority and does not consititute financial advice.Any information you use or guidance you follow is at your own risk.

Calculations are estimates provided for illustrative purposes only. Candid Money Limited accepts no liability whatsoever for their subsequent use.