Which one is a wider lens. 35-105mm or 28-105mm?
The 28mm lens is wider, with a focal point at 28ft you can see more of the outer distance than if you were focusing on 35ft. The higher the number, the farther the focus point, the smaller the viewable area.
Why should oil based contrast agents never be injected into the bloodstream?
Oil based contrast agents will produce an emboli
as far as hooking it up to a stereo receiver? well its all about inputs and outputs...if the mp3 player has a headphone plug that's an "output". sound is coming out of that hole so it can go IN to your headphones. and inputs on your receiver like Video-IN, CD-IN etc. that's were the sound is supposed to go IN so in can go to the speaker wires and OUT the speakers. just run a cable from and OUT put hole on the MP3 player to the INPUT hole or holes on the receiver. its like using your headphones as a Mic. seriously plug your headphones into your MIC hole on your computer and try and record yourself talking into them. ive done it. no lie!!!! It works because its all based in the INPUTS and OUTPUTS
Reasons why afraicans were used?
They were used because of the physical differences from whites. Whites also thought that because they were not like them that had to dumber and inferior to whites.
Can you get question papers of microbiology of Nims university distance education?
Contact the university.
Is the use of gender stereotyping in advertisements truly a reflection on todays society?
advertisements are to do only one thing, to make you think you want to buy or need to buy whatever it is they are selling
to get you to think about them, their company their product
it cant be a reflection on todays society fairly and truly, because society is made up of individuals and individuals are different to each other, or at least believe themselves to be different
stereotyping only really works on society as a whole, not on any individual who is watching at home, and when they are referencing someone else not the stereotype the individual is supposed to be
as an individual they will always think 'hey i don't do that', 'i don't like that', 'i don't look like that', 'that's NOT me' and will then distance themselves from the product
reality and humor are always more effective than pretense advertising is always noticed much more when it acts like an individual, because individuality connects with the individual at home
however the use of stereotyping in a humorous context will always be noticed by society because society knows the stereotypes,
the individuals in society however don't like to be judged seriously as a stereotype whether man or woman, boy or girl
its felt to be insulting and judgmental and very alienating when you don't feel like you fit in with society's version or the TVs version of whats 'normal' or stereotypically 'normal'
f4
Why the invention of the microscope led to the discovery of cells?
Because the microscope was the first measurement tool that could make objects as small as cells visible. Before that there was no evidence for the existence of cells.
Where can you buy gum media in Florida for your microscope?
There is no listed store in Florida that has gum media, but you may be able to find some at a science store. There are several websites that do have gum media for purchase. The sites are Microscope World and Optics Planet.
What is the lens that is used to find the specimen on a microscope?
You use the low power lens to find the specimen with a microscope. Once you have found the specimen on low power, you can switch to high power for greater magnification. Just be sure to use only the fine adjustment knobs for focusing on high power so the high power objective won't hit the slide.
A glass slide is used for mounting specimens for microscopic study.
The parts and functions of the parts of a microscope?
Arm = supports top part of microscope Base = the part the microscope stands on Lens turret= a rotating support for the objective lenses objective lens or lenses are those closest to the object being viewed. Their degree of magnification is usually marked on the side of the lens, eg. 100x magnifies the object 100 times. The longer the lens, the greater its magnifying power. Eyepiece (or ocular lens) = This is the lens closest to the eye and its magnifying power is generally marked on the side. To determine the total magnifying power of a compound microscope, multiply the power of the ocular lens with the power of the objective lens. For example, a 10x ocular with a 100x objective would give a total magnification of 1000. A microscope may also have a binocular eyepiece with a lens for each eye. Stage Clip= holds the glass slide which contains a specimen to be viewed. Stage- holds the specimen. Coarse adjustment knob- makes large adjustments to the focus of the lenses. Fine adustment knob- makes small adjustments to the focus of the lenses Below the stage is located either a mirror or an electric light which directs light through the specimen on the stage.
Why is specimen smaller than200mm not visible with a light microscope?
Because the smallest wavelength of visible light we can see is around 400 nm. Something 200 nm would need an electron microscope to be seen.
Can protozoa be seen under a light microscope?
As larger eukaryotic cells many can be seen under a light microscope ( moderte to good quality ). Simple fresh pond water can show a whole different world of protists.
What kind of microscope did Robert Hooke use?
Robert Hooke built the compound microscope. this microscope was made out of more that one lens
Why did scientists have to use other tools other than microscopes to solve the structure of DNA?
DNA is too small to visually make out the structure; even the best modern light microscopes can't see that it's a double-helical shape. However, crystallizing it, bombarding it with x-rays, and looking at the diffraction let them get a better look.
Specifically, the wavelength of visible light is too big to see it.
Good on you, Rosalind Franklin. (And Watson and Crick too, I GUESS)
Is electron microscopes good for watching cells growing?
No.They are not but they are good for observing cells.
What does a transmission electron microscope and a scanning electron microscope have in common?
These are both high resolution microscopes that both use electron beams.
Why did scientist have to use tools other than microscopes to solve the structure of dna?
The size of DNA is way too small to be seen by a microscope. X-ray Crystallography can be used because it sends x-rays at a molecule and then the machine measures the pattern of the x-rays to construct a 3D image of the DNA molecule
What are the primary lenses that magnify the specimen on a microscope?
primary lenses are that lenses which are maked by leunhoek .these lenses are used to see parts of different objects and these lenses had maked first.they are mostly used in ancient time.
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When was the inverted microscope invented?
In 1850, John Lawrence Smith invented the inverted microscope. He was a faculty member at what is now Tulane University.
What is the role of lenses used in cameras telescopes and microscopes?
In a simple microscope, a lens magnifies the image of the sample.
in a compound microscope, the objective lens magnifies the image (there may be more than one objective lens) and the eyepiece lens enlarges the virtual image (which is typically inverted by the objective lens).
Why does moisture need to be removed before an organism can be viewed with an electron microscope?
Liquids and gases expand inside a vacuum, so the organism's shape would be destroyed..
How did Robert Hooke contribute the development of the microscope?
Robert Hooke did NOT invent the microscope. He only perfected it. He made the discovery of a cell.