Does the measurement of an object decrease or increase when looking under a magnifying glass?
928898
If you place the ruler next to the object, both the object and the ruler will get larger at the same rate.  If you place the ruler above the magnifying glass, the object gets larger, the ruler remains the same size.
1163379
View it through a magnifying glass- thats quickest
608577
Depends on the shape of the object being measured.
354436
(m)\n\nField of View or Field Diameter is very important in microscopy as it is a more meaningful number than "magnification".  Field diameter is simply the number of millimeters or micrometers you will see in your whole field of view when looking into the eyepiece lens.  It is just as if you put a ruler under the microscope and counted the number of lines.  \n\nThe chart below will tell you (approximately) what to expect when looking through a microscope with varying combinations of eyepiece and objective lenses.  As an example (in green below), a dual power stereo microscope with 10X eyepiece lenses and 1X and 3X combinations of objective lenses, would have total powers of 10X and 30X and your field of view would be 20 mm and 6.7 mm respectively.  \n\nThis means that an object 20 mm (2 cm, or about 3/4 inch) wide would fill up the whole viewing area at 10X and an object about 6.7 mm wide would fill up the whole area at 30X.  As you can see, having the highest power may not be best for your particular application.  When you move to greater magnifications, you sacrifice field of view.
945725
will decrease as the mass remains the same and the volume increases
1149381
Windows XP has a magnifying glass. Its under your Accessibility folder.
1084274
Every measurement has an uncertainty.  Measuring distance with a laser for example is affected by the wavelength of the laser which can be changed by air density.   Temperature affects the length of all materials.  Even outer space has distortions due to gravity of the stars and planets, gas clouds etc.
241765
it gives a relative measurement but i wouldn't count on it to be exact
288946
a double convex lens will magnify, i can't remember which ones reduce size, but i'm guessing some sort of concave lens, and lenses REFRACT light, while mirrors REFLECT light.
980101
dilation because it changes the size of the figure ... figures remain similar\n\nrotation, reflection and translation maintain congruence because all they do is change the position and/or orientation
598099
For an image to be seen it has  to reflect light. Light doe snot always travel in a straight line. Magnification is the ratio of the height of the image to the height of the object. In case the  magnification is negative, the image is inverted.
988641
Awesome question.  I have no idea.  The first thing you would have to know is what the properites of glass are that could, if at all, slow the speed of light.  As well as at what thickness of glass, which, in a backwards loop hole sortof way, directly relates to my last sentance.  (if a piece of glass were doubly thick as a single piece of glass, would it cut the speed of light in half?--depends on how thick the original piece was and if the original piece did anything to slow light's speed at all--see where i'm goin?).  Please tell me what you find, I'm very curious, I love questions that make me think deep.  Peace out dude, rioedgebravo@yahoo.com
725263
I think you are talking about diameter and that too about graduated cylinder.\n\nThen a small measuring cylinder is more accurate than large measuring cylinder.\n\nGenerally, as a cylinder is narrowed, more precise measurements can be obtained in readings, as the graduation markings are farther apart for the same volume.
626305
Because you can read/see something better through a smaller hole. It's just like making a small circle with your index finger and thumb, if you look through it you can see a lot better!
572843
focal lenth will definitely increase. because refractive index will decrease
986686
It is how opaque a material is.\n\nIt is measured by how much light can be seen through the material.
537574
no, the focal lenght is the property of the mirror, not of the medium in what is situated.\nthe focal lenght = mirror radius / 2