What parameters define the spectrum of the UV-sources based on laser spark discharge plasma?

11 December 2014 7,142 5 View

Is there some general FFT approach optimizing the calculus of an integral by reducing the number of calls?

08 September 2014 5,944 1 View

Famous scientists portraits in high resolution?

I would like to make several large portraits prints (1mx1m) for the lab of Newton, Fourier, Michelson, Rayleigh and some other famous scientists. Can you advise any web source or a hard copy book,...

09 October 2013 320 7 View

CCD vs CMOS = sensitivity vs anti-blooming. What is the better choice for DHM?

Has anyone lately come across some comprehensive reviews devoted to sensor type comparison related to DHM (digital holography microscopy) applications? Is it true that CCDs typically outpixel CMOS...

08 September 2013 7,007 3 View

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Can anybody suggest where to purchase ready to use or to manufacture several beam splitting cube pairs coated for all visible range (0.4 - 1 um), with a size of 15 or 20 mm, 30% - 70% and 70% -...

02 March 2013 8,556 7 View

How to Eliminate cosine error and abbe error in LASER measurement system(for example Rhenishaw XL80)?

I like to do project in laser measurement system. My objective is to eliminate or reduce the cosine error, abbe error in Laser measurement system. I have Rhenishaw XL80 system. Please tell the...

28 February 2021 4,890 3 View

How can we limit artifacts caused by rotation in fiber photometry?

We are trying to run fiber photometry experiments for long time scales, but we get these sinusoidal artifacts that come up. We think they may be caused by twisting of the fiber optic subject...

25 February 2021 568 1 View

How to measure angle between laser travel path and machine axis in Laser Measurement system?

25 February 2021 1,987 3 View

How can I simulate the optical absorption spectrum of a biomaterial (like DNA or protein) in COMSOL?

I need to simulate the optical properties of a biomaterial, namely DNA, in COMSOL. Basically I need to simulate the IR absorption spectrum of a cylinder filled with a 'concentration' of DNA. I am...

21 February 2021 3,043 3 View

Can I do two kinds of mixed method in explanatory research?

Dear distinguish professors and scholars, I have a research in measuring two kinds: think tank capacity and research impact on policy. Can I do two kinds of mixed methods in order to find, "Is...

20 February 2021 6,897 1 View

What is India's InternationalTrade Policy during Pendamic? How do you find the policy as successful one?

During Covid-19 Pendamic Government are facing problem to maintain business. India is one of them so this question is perfect to be discussed here.

08 February 2021 2,725 3 View

I am struggling with the concept of preprint papers and wonder how people feel about them?

Specifically, how should we use them given they have not been peer-reviewed? Should we rely on the results reported in pre-prints for policy? I am really probing for thoughts on whether...

04 February 2021 3,175 15 View

What is the reason of the received optical signal to be slimmed down in multi-mode fiber?

What is the reason of the received optical signal to be slimmed down in multi-mode fiber? I have 4 km multi-mode fiber

03 February 2021 1,105 10 View

What are the factors we should keep in mind while submitting the article to journal (*general question)?

What are the factors we should keep in mind while submitting the article to journal? Why many papers get rejected even though they contain proper content? Why few journals take years of time...

01 February 2021 3,130 2 View

Why it is not permissible to correct all 5 classical optical aberration (spherical, chromatic, coma, astigmatism, curvature of field) simultaneously?

When first order paraxial optics is expanded to third order optics (i.e. sin x~ x-x3/3! instead of sin x~x) , these 5 optical aberrations result in. What is the rigorous mathematical proof that,...

26 January 2021 8,666 4 View