The visually perceived property of objects created by absorption or reflection of specific wavelengths of light. | Contact experts in Color to get answers
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Questions related to Color
When I tried to adjust 0.01 M AgNO3 solution PH to 8, 9, 10, so on using 0.1 M NaOH, it always forms color and challenges me during the addition of essential oil solution to observe the right...
04 September 2020 4,172 1 View
As the original published paper of Geneland (back in 2005) and most of published papers suggested, the diagrams of posterior probabilities of population membership should group the closely related...
01 September 2020 8,286 1 View
I understand that the protein is colored from N to C terminus starting with blue, till red. But what is the basis for the segmentation in coloring? It is not based on secondary structure, since a...
31 August 2020 2,951 1 View
Recently, I am using Ag/AgCl as RE in a basic three-electrode system to scan CV in K3Fe(CN)6/ K4Fe(CN)6. I realized that the color of the solution in RE changed from transparent to yellow. Can...
26 August 2020 6,493 7 View
Hi all, Recently, I sputtered some gold on the surface of PTFE with a thickness of 1 nm and 3 nm (Please see the attached). The color was grey when it was done. However, after about one day, the...
20 August 2020 1,435 3 View
I prepared seed solution with HAuCl, CTAB, and NaBH4, after this growth solution with HAuCl4, CTAB, AgNO3, and Ascorbic acid. In the end step, I added Ascorbic acid in growth solution and solution...
18 August 2020 7,715 3 View
Hello, I am working on a C-C coupling of a strong electron accepting aryl-cl and Bu3Sn-Benzonitrile. I was able to synthesize my product but the yield is very low. I always have a big residue/...
11 August 2020 7,037 8 View
Preservation of natural food color
10 August 2020 8,194 1 View
Hello. I investigated the color of iconography of ancient ceramics; Normally by using XRF (and/or other chemical methods), investigators detect which chemical element(s) and its amount. If we had...
09 August 2020 7,717 6 View
In my research I have to measure the amount (mass/concentration) of cellulose, CNC and glucose in acid hydrolysis for developing a kinetic model. However, glucose can be measured directly using an...
09 August 2020 1,141 1 View
Pointillists and divisionists separate colors into smaller dots and paints to blend in the viewer's eye at a distance. I wonder if it has already been formulated. I would very much like to know...
05 August 2020 5,993 3 View
Dear all, Recently i have been trying to measure colour difference between my samples. I am a little confused as to why i cannot just use the basic colours - i.e., red, green and blue to measure...
03 August 2020 7,657 2 View
The black pepper field is very matured and stayed bearing reasonable yield for years. However, this year, there no flowers on the branch and we are very sorry for that. I ask support if there is...
23 July 2020 7,955 11 View
Adding Green Colour to the Alkaline Liquid (Sodium Hydroxide, Sodium Carbonate and acid slurry - PH value around 9 to 10). The liquid colour changes to dark brown after 2 days. Is there anyway we...
22 July 2020 6,300 1 View
Immature locusts in solitary phase they look like Pink color, mature locusts look like yellow color. What are the reasons
21 July 2020 2,788 0 View
Houseflies fortunately follow the simplest (possible?) system, as maturing females make their primary stimulant after 3 days. Fortunately mature males in large cages responded dramatically to one...
17 July 2020 3,599 0 View
Hi, I need to analyse Total Flavonoid Content in a crude leaf extract. I notice Potassium Acetate is one of the reagents involved whenever Quercetin being used as standard compound. can we use...
10 July 2020 7,652 16 View
Hi all, Recently I encountered some irregular black/grey patches inside my cell culture flask (see attached image, x400 magnification). They are not motile, not floating, do not stick to cells...
09 July 2020 8,204 3 View
I tried to conduct the synthesis of a cyclic dipeptide from L-DOPA directly. Following the experiments from some papers, I set the reaction temperature to be 220 celsius degrees and the solvent I...
05 July 2020 6,615 0 View
I am planing an experiment to investigate the dispersion ability of Trichogramma dendrolimi under semi-field conditions. As far as I know Trichogramma uses kairomones for host finding but are...
30 June 2020 4,474 1 View
I was trying to find out whether my bacteria can degrade crude oil or not using DCPIP method that changes color after oxidizing hydrocarbons. But, I happen to order the crude oil containing 5%...
26 June 2020 10,164 2 View
I'm trying to color the surface of my protein corresponding to just specific residues. My protein is large and has five subunits containing the same sequences for each. I want to color specific...
25 June 2020 1,574 1 View
Edit: I've understood the "problem" now, the question is resolved. I understand now that value range is in units of Hartrees for the ESP due to a unit positive point charge, hence Si is red to...
22 June 2020 1,109 2 View
I am planning to run an experiment that requires me to monitor growth kinetics in aerobic bacterial communities over approximately 7 days. The communities should have between 30-100 species...
18 June 2020 4,583 1 View