How to measure the intensity of sunlight?

More N. Venkatathri's questions See All

How to determine the impact factor of a journal ?

We know impact factor is calculated based on citation. What formula used in it. Is it simple, number of citations divided by number of articles published or any thing else.

01 February 2016 5,829 0 View

How can you measure the basicity of a solid material ?

Basicity is a important criteria to measure the catalytic effect of many solids like zeolites. So it is necesary to qualitative and quantitative analysis of it.

09 October 2015 338 2 View

What are the possible applications of carbons nano fibers ?

It is known that carbon nano fibers are known recently. However I am unable find its probable applications. Some suggestions are in fuel cell. What are the others.

01 February 2015 991 5 View

In multiwall carbon nanotubes, how many, what is the maximum number of walls that are possible ?

In carbon nano tubes, single wall, double wall and multi wall carbon nanotubes are possible. In case of multiwall carbon nanotubes, maximum how many number of walls are possible.

31 December 2014 6,287 6 View

How can we increase the rate of crystallization ?

It is known that we can get smaller particles by increase the rate of crystallization. How can we achieve that ?

11 December 2014 6,278 2 View

In oven, we are using microwaves and why not Infrared radiation ?

We are using microwaves in oven, and not Infrared. Actually Infrared rays produces heat. Why is it not used.

11 December 2014 768 3 View

Why electrons diffuse through only thin films ?

It is known that in Transmission electron microscope, the electrons are diffuse through films less than 300 nm. However, Scanning electron microscope coupled with Electron diffraction X-ray...

11 December 2014 10,163 8 View

Why does absorption and emission of ultraviolet - visible light occur in the same region?

Normally absorption or emission of ultraviolet visible light occur in the same region. If bathochromic or hypsochromic shift occurs it should go to other regions. Normally we are not observing...

11 December 2014 3,905 2 View

How can we prepare nano-crystals ?

We know that we can prepare nano-materials by sol-gel, co-precipitation methods. However, when we prepare nano-materials with these methods it often results in amorphous materials. In this...

11 December 2014 8,977 11 View

Is there pH lower to zero and higher to 14 ?

If we use pH meter for concentrated strong acid, the pH comes in negative value. However I did not experience more than 14 pH. But is it possible, I like to know.

09 October 2014 8,188 1 View

Controlling for pupil light reflex when analyzing pupil size time course?

I used eye tracking to examine how participants from two different populations (A and B) react to an image. Participants in population A exhibit larger pupil sizes over time, but they also have...

10 August 2024 3,229 0 View

Is someone interested in testing some of our new Alluaudite compounds (Molybdate) in the fields of heterogeneous catalysis and photocatalysis?

We have an original Alluaudite-Molybdate we want to test for catalysis and photocatalysis applications.

04 August 2024 2,261 1 View

Z-average size from Dynamic Light scattering can it be lower than the original probe size?

Hi everyone, Recently I have been conducting Dynamic Light scattering experiments in a micellar solution at 5 and gel at 37 degrees of Celsius with latex particles of diameter 190-500 nm. While...

01 August 2024 1,168 4 View

Can a Conventional 50W visible LED Lamp Emit UV Light?

I'm researching light sources and their UV emissions. I'm curious if a 50W, 7500K conventional LED lamp emits any UV light. I found that a 200W tungsten lamp can emit up to 1.5 mW/cm² at 350 nm....

31 July 2024 3,843 7 View

While doing Chronoamperometry, when the light is turned off, why the current is not decreasing sharply?

Here, I have used Ag/AgCl as reference electrode and 0.5M KOH.

29 July 2024 4,538 3 View

Seeking recommendations for equipment to mimic sunlight and heat up a greenhouse system?m?

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28 July 2024 4,006 2 View

Aqua regia not heating up?

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25 July 2024 4,390 0 View

I found the zeta potential of exosomes in DLS and it was -8mv. So is it correct or not ?

What should be the zeta potential of bovine milk exosomes

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Comparing Liposome Size: DLS Measurement vs. SEM Observation with Air Drying ?

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25 July 2024 3,395 3 View

Can anyone kindly suggest research topics in the area of thermodynamics, heat transfer, fluid mechanics or renewable energy?

I am an undergraduate mechanical engineering student seeking suggestions on topics related to either thermodynamics, fluid mechanics, heat transfer or renewable energy for my final year project....

24 July 2024 4,058 5 View

Hikmat S. Hilal

There are different types of devices to measure light intensity. You may use luxmeters or pyranometers. The problem with these is that they measure overall wavelength range.

If you have filters, you can measure narrower ranges coming out of each filter.

N. Venkatathri

I hope we can measure by using a photomultiplier tube. Which is useful in various photometric instruments.

Michael Schmitt

you can calibrate a diode array detector.

Article About the possibility of calibrating optical detectors by so...