Microscope Definition and 252 Threads

Two microscope slides separated by a sheet of paper at one end. I tried different sources of light, yellow LED, red LED, fluorescent lamp and i can't see any fringes. What am i doing wrong?

This seems crazy, but I've discovered that when using my microscope at high power - a 10x eyepiece and 40x objective for 400x magnification - and a plain bright field I can get a clear virtual image of my own vitreous floaters. The images are crisp, in a tight focal plane, move in that sluggish...

But you better have a microscope to see them! https://www.npr.org/2024/04/16/1242941475/new-generation-chip-art-silicon-doodles-engineers-microchip?ft=nprml&f=1002

Hi everybody I'm new to the forum, I was looking for somewhere I can find out the make of a microscope hoping this could be the right place. I want to find out so I can hunt down objective lenses.

Hi everybody I'm new to the forum, I was looking for somewhere I can find out the make of a microscope hoping this could be the right place. I want to find out so I can hunt down objective lenses.

If you had--infinite--resources, material, manpower, energy, but only with current technology, or something that could be learned in a short time, how big of a microscope would it take to see a Planck Length? If there's a current limit, still with infinite resources, how small could you see and...

For this problem, Distance from objective to object ##𝑑𝑂 = 10.6cm## Distance between the objective and eyepiece ##𝐷 = 34cm## For (b) I got ##d_I = 26 cm## and ##M_1 = -2.4## which means that firsts image is inverted and real For (c) I got ##dI' = 35 cm## and ##M_2 = -1.3##. However, I...

I'm not so much interested in how they work, but to buy a ~$200 one with built in video camera that I could save video files of sperm cells moving around. I've heard that needs 400x optical magnification. How about this one? https://amscope.com/products/m158c-e Thanks!

[FONT=courier new]The lowest price for a microscope that can... What is the cheapest (no not a cheap one but the cheapest) microscope from which atoms can be seen in? I don't need a big zoom into an atom. If possible I would just a zoom enough to see atoms as tiny spheres no structure. Example...

So what am I doing wrong here? I can clearly observe it, I'm nearly sure I can tell which particles are going throw each slit if I used another laser too. My suspicion is that the electrical current of the photon detector that uses germanium or silicon to detect the particles are influencing the...

Hi there! I'm doing a project where I will be making 3 ecospheres (ecosphere = enclosed water ecosystem trapped in a jar) using water & substrate taken from 3 different natural sources. I'm hoping that microscopic life will flourish in these jars because my plan next is to study the lifeforms...

R = 1.22*700nm/(1.3+0.95) ≈ 380nm

Is it possible to design & construct a Microscope (optical or Electron) which can take multiple slides samples instead of a single sample slide at a time?. Possible construction of the Sample Slides target is a circular disc holding say 5-10 sample slides. The Circular disc can be rotated...

Ok so for a compound microscope system like the one below, Magnification power is ## MP = M_T * M_A ##. My present understanding is that ##M_T## refers to the magnification by height ratios of the object through L1, and ##M_A##, in this case, refers to the ratio of unaided and aided angles of...

If we say "length of microscope", which distance does it refer to? Is it: a) the tube length (L), which is the distance between the focal point of objective and focal point of eye piece lens OR b) the distance (d) between objective and eye piece lens Thanks

Hello folks, I have the two following questions I'm working on: Q1 An optical microscope uses a lens with NA = 0.7 and a focal length of f = 20 mm. What is the smallest spatial distance that can be resolved if a wavelength of λ = 633nm is used? An iris is introduced in front of the lens with a...

Hello everyone, I am attempting to make a Raman spectrometer which can double as a microscope. It uses a 532nm laser for excitation, an infinity-corrected microscope objective to collimate the light, a 200 lines/mm diffraction grating, and a confocal lens pinhole setup. A 5 megapixel camera ...

In the thought experiment proposed by Heisenberg, a single photon is scattered by the electron that we want to observe, and entering the microscope lens (the photon), it will create a diffraction pattern that gives the uncertainty on the position according to the law of optics. I wanted to ask...

After many months what comes out of the mouth and nose of someone infected with Covid 19 has not been directly observed. A single virus particle of Covid 19 is about 120 nanometers in diameter. This means that to see the virus, visible light wavelengths of 400 nm to 700 nm are too long to...

So I'm reading up on this device and what I get is that in all electron guns once the electrons are emitted they would tend to repel one another so in order to make the beam focused instead of spread out across, one uses magnetic fields in the electron microscope, So after the focused beam hits...

When I was a child I used to have a microscope. I don't remember the maximum zoom it could do. Nowadays when I look up for amateur microscopes on the web, they seem to go up to either 1000x or 2000x. Do you think it's enough to get some fun by looking at bugs and cells of onions for example? The...

For finding refractive index of a glass block, we use n=real-depth / apparent-depth For calculating apparent depth microscope is raised vertically until a clear focus is obtained of the underlying mark beneath the glass blob. Given that microscope is perpendicular to the mark, Wouldn't the...

Perhaps this should be in the Biology forum, but I'm thinking that you physicists can give a more reliable answer here. The magnification equation for microscopes is: M = I/A (image size divided by actual size). This seems very easy and intuitive. By this equation, if the image size was...

Good evening, In the following weeks, I will be performing a lab project during three sessions and one of the things that I have to do is to create a microscope using a set of lenses (We are using a 50mm focal length convergent lens as the objective and a 100m focal length convergent lens as...

just watched this how i don't see the atoms quantum tunnel instaneneously to another location? how come i don't see waves? how come i see billiard balls?

I know that scanning tunneling microscopy (STM) I-V curve is exponential for a conducting sample. How would it look like if I had a semiconductor and a non-conductor sample?

Here are two ray diagrams for compound microscope, the first one proposed by the book, and the second one recommended by the teacher: In the first image, the light rays form a real image A'B', which becomes the virtual object for the eyepiece. See, the original rays are carried forward to...

Hi I'm reading through a Quantum Mechanics textbook called Quantum Mechanics by Book by Alastair I. M. Rae and in the opening chapter it talks about the Heisenberg uncertainty principle and talks about how a measurement of position of a particle causes an uncertainty from the momentum due to the...

For an upcoming research project, I intend to apply different solutions to cultures of cells. How would I determine if the cells are incurring damage from the solutions due to the pH of the solutions as I observe them under my compound microscope?

The question: -------------------- The length of a microscope pipe is $L=160\,\rm mm$, the transverse magnification of its objective $M_o = 40\times$ and the diameter $d_o = 5\,\rm mm$. As for the ocular/eyepiece, its magnification is $M_e = 10\times$. 1. Find out the focal length of the...

When does a convex lens behhave as a simple microscope and what are the conditions for the object and the lens to act if there are any?Is the magnifying power of microscope fixed beyond which it will act as a regular convex lens

In an old fashioned electron microscope (the type I was meant to understand at university 50 years ago), are the electrons coherent, or do we just consider an electron interfering with itself? If they are coherent, how are they made coherent?

If someone, were to theoretically build a microscope that could see an atom what, would the electrons be doing?...would they be orbiting the nucleus at a steady speed or would they be popping in and out of existence in their shells in different locations due to the uncertainty principle?

Hi all So I am planning to save up for this microscope because I am trying to 'upgrade' from my microscope whos max magnification is 1000x (keep in mind Its not clear at max the highest it would be a good image at is 500x)...

Hallo everyone, I have a question about X-Ray shielding in a scanning electron microscope and I hope you can help me! The topic is that when electrons hit the specimen, characteristic radiation up to 10keV is generated. This radiation is blocked/decelerated my the surrounding tower and chamber...

The question A microscope is focused on a black dot. When a 1.20 cm -thick piece of plastic is placed over the dot, the microscope objective has to be raised 0.380 cm to bring the dot back into focus. What is the index of refraction of the plastic Relevant equations/ideas...

Hi, there is a question I am not sure about. We are trying to measure the width(thickness) of water as it is streaming from the tap and draining into the sink, my question is why use of vernier calliper is inappropriate and traveling microscope is suitable for this measurement? Thanks

Homework Statement Homework Equations θ =1.22λ/d The Attempt at a Solution for (a) θ =1.22λ/d θ =1.22(579nm)/(1.2cm)[/B] θ =5.8865x10^-5 degree= 1.027x10^-6 rad but the answer =2x10^-3rad , for the micorscope, the formula of angular resolution is different? i...

Hello, I have a 12 pin Photomultiplier tube and am wondering how many ohms should be on the resistors. There would be 11 resistors (1 between each pin) and no capacitors, anode grounding for DC operation, 1000volts, only to go off to an op amp for signal processing. This design is shown in...

What are the different formulas for the calculation of magnifying power of a microscope and a telescope? And how would we use the sign conventions in them?

Hello everyone, I would like to ask if anyone has ever know about this one. I have no idea how to make it run. The jack on top of it is 26pin inside but the cable is 26pin plus 2 more very black wire welding on each side of the Jack. I remove the Lense i see the small camera with name is CIMARK...

Hello, I don't have a microscope yet, but I want to buy one, sometime in the future. I was wondering if anyone can teach me or recommend me some good resources for learning how to make microscope videos. I would like to compare the difference between cooking oil and cold press cooking oil for...

Hi! is there any microscope or images in which we can see how a matter reacts as it is heated? And how was it proved that when matter is heated their particules vibrate faster?. Tahnk you!

Homework Statement A microscope slide is placed in front of a converging lens with a focal length of 2.44 cm. The lens forms an image of the slide 12.9 cm from the slide. a. How far is the lens from the slide if the image is real? Homework Equations 1/f = 1/di + 1/do The real equation (but...

Homework Statement A compound microscope has an objective of focal length 12 mm and an eyepiece of focal length 50 mm. The lenses have a separation of 90 mm and an object of height 0.3 mm is placed 15 mm from the objective. Calculate: (a) the distance of the intermediate image from the...

I have very strong astigmatism, for a 17-year-old. I wear toric contacts, which is supposed to help people with astigmatism. I take a college biology class and today we were looking into light microscopes. I have always struggled with looking in microscopes, but today felt so much worse. After...

Homework Statement They were going to purchase an electron microscope, and wanted the electrons velocity to be as high as 25% of the speed of light after acceleration. There was a microscope at hand that had an accelerating voltage of 40 kV. a) How large is the electrons relativistic mass when...

https://www.dropbox.com/sc/eo2c8j4kd12pdvn/AACGJ8YZvk35BSX1BsBoKIIsa Please view the above image. I am getting awesome contrast on the periphery of the image but hardly any in the center. The sample is an H and E stained tissue and I just got the microscope in today. I am a rookie with...

when physicists say that they apply voltage to the tip or the sample, do they mean that the tip or sample become electrically charged?

Looking at Ben Krasnow's youtube video on breaking down the parts and general cost for a scanning electron microscope, he lists a raster scan generator, is that able to produce the highest resolution images still? Or is there another more modern technology for this purpose? Otherwise, how has...