The models found in most schools, use compound lenses and light to magnify objects. The lenses bend and refract the light, which makes the objects beneath them appear closer.

  An adjustment joint between the pillar and the arm, that lets the arm tilt at various angles.

It is found immediately beneath the stage, serves further to concentrate the light rays on specimen.

Which of the following does not show proper care for the microscope?

It is a metallic structure above the nosepiece which protects the lower lenses.

A mechanism attached to the stage that will enable to move the slide around by turning two knobs.  One moves it left and right, the other moves it up and down. 

  In making a wet mount, we should:

During clean-up, the following should be done except:

Only half of my viewing field is lit, it looks like there's a half-moon in there!  

   In the collection of Liquid Blood, the following procedure must be done except:

Arrange the following procedure in the proper collection and packing of Blood on large solid surface correctly.

1.       With the use of a razor blade or clean knife, loose and scrape the dried material onto the paper. Crust should be removed without breaking if possible.

2.       Shake the powdered stain to the center of the paper and then fold. Scrapings removed from the different areas of the walls and floors are separately placed on a paper and labeled as to the location where found.

3.       Place clean sheet of paper below the surface bearing the stain.

4.       Seal thoroughly the folded paper with cellophane tape and individually place inside a white mailing envelope sealed with a masking tape and affix the initials of the investigator, date and other information.

In the proper collection and packing of Blood Stain on Clothing and Fabrics, which of the following is not a part of the procedure?

A Dutch spectacle maker who is credited for the invention of the compound microscope

What is the purpose of adding Sodium Fluoride to the liquid blood sample?

The compound microscope has two system lenses for greater magnification, (1) the objective lens that one looks into and (2) the ocular or eyepiece lens or the lens closest to the object.

The Arm is an optical part of the microscope, which is short-curved, used in carrying the microscope. This attaches the eyepiece and the body tube to the base.

  Fine Focus Adjustment is a knob geared to the body tube use to bring the object into focus.

  High Power Magnification has a total of 400X Magnification because the objective has a magnification of 4X and the Ocular Lens has 100X.

Transmission Electron Microscope also uses electrons, but instead of scanning the surface, electrons are passed through very thin specimens.

High Power Objective is a large lens with high magnifying power. Shorter lens screwed to the rotating nosepiece; serves to form bigger image of the object within the body tube.

The Low Power Objective has a magnification of 10X.

Look through the ocular with one eye and adjust the mirror for even illumination. Never use direct sunlight when you look through the microscope as it may injure your eye. Keep both eyes open and relaxed.

In Focusing specimens, always start with the scanning objective. Use the Coarse Knob to focus, image may be small at  this  magnification, but  you won't be able to find it on the higher powers without this  first step. Use stage  clips immediately, try moving the slide around until you find something.

  In focusing specimens, If the specimen is too light or too dark, try adjusting the eyepiece. TRUE

In using the microscope, look through the ocular and slowly turn the coarse adjustment screw counter clockwise until the object is clearly in view; then use the fine adjustment to get a sharp image. Never focus with the coarse adjustment while looking through the microscope as you are liable to crush the slide and damage the lens. If you cannot see the object, it means you have not placed it at the center of the microscope field. Re-center the object and repeat the focusing procedure until you see it.

In using the microscope, look through the ocular and slowly turn the coarse adjustment screw counter clockwise until the object is clearly in view; then use the fine adjustment to get a sharp image. Never focus with the coarse adjustment while looking through the microscope as you are liable to crush the slide and damage the lens. If you cannot see the object, it means you have not placed it at the center of the microscope field. Re-center the object and repeat the focusing procedure until you see it.

Labels should be written inside the circle when drawing specimens.

In staining a slide, the stain does not need to be under the entire cover slip.

For blood stains in hard objects, place identifying marks directly on the recovered object as far away from stained areas as possible. Provide a label or a string tag bearing only the following information: Date and Time of finding the specimen, name and description of the specimen, signature of the investigator.

The Hydrogen Peroxide catalyzes the oxidation of phenolphthalein, which is colorless in solution, into phenolphthalein resulting in a pink colored solution.