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Emma Armstrong The metamerism of 16 th Century candle-light using modern technology Experimental results April 2008.

Objectives of practical session ,[object Object],[object Object],[object Object]

Preliminary questionnaire ,[object Object]

Station One ,[object Object],[object Object],[object Object]

Station One ,[object Object],I expect responses for the candle to be “warm”, “atmospheric” and “relaxing”. Responses for the light-bulb, I expect to be “harsh” and “bright” I think responses for the battery operated tea-light will be more varied as these are quite new on the market. Because people have clipboards and are kept anonymous, I hope there will be a range of answers but feel they may be very similar.

Station One Results ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Station Two ,[object Object],[object Object],[object Object]

Stations Three and Four ,[object Object],[object Object],[object Object],[object Object]

Stations Three and Four ,[object Object],As time lapses, the gel choices will become less yellow and more orange shades. 30% of participants will choose the same gel in station three as in four. Participants will choose lighter colours on the masks than on the canvas. Age and sex of participants will make no difference to the results but technical ability and eyesight will show trends.

Stations Three and Four ,[object Object],[object Object]

443 103 205 206 232 013 443 763 206 205 103 232 763 013 Participant Number Overall choices of Gels. Stations three and four

443 103 205 206 232 013 443 763 206 205 103 232 763 013 Participant Number Male and female choices of Gels. Stations three and four Male Female

103 443 232 763 205 013 206 232 103 443 763 205 013 206 Age Station 3 Station 4 To show age and gel choices in 3 and 4

Time (mins) To show technical ability 443 103 443 232 763 205 013 206 232 103 443 763 205 013 206 Time in Minutes

Stations three and four ,[object Object],“ Candles are multi-tonal whilst the gel is one tone” Not as many trends as I had expected. Wider range of results and gel choices on the mask station than on the canvas. People found the mask station more difficult to decide on. The light-bulb was set at 40% as this matched the candle when first lit. However, this would have been different as the candle burned down and the lux level dropped meaning that the lux levels of each source would have been different.

Station Five ,[object Object],[object Object],[object Object]

Station five ,[object Object],The range of results will be small; each colour will be within 20% of each other. As the time progresses, the amount of red will increase. People will find it quite difficult to match, especially ones that are not used to lighting desks / technical equipment.

Results of station five ,[object Object],[object Object]

Overall results table Participant Red Green Blue 1 100 14 0 2 100 30 0 3 63 11 0 4 10 8 2 5 33 5 0 6 98 18 0 7 49 9 0 8 33 7 0 9 80 18 0 10 42 7 0 11 100 16 0 12 79 16 5 13 28 0 0 14 27 4 100 15 80 10 0 16 100 14 0 17 13 2 0 18 40 15 10 19 40 15 10 20 79 20 2 21 56 11 0

Results of Station Five – RGB LED colour mixing. General

Results of Station Five – RGB LED colour mixing. Age 28 13 29 50 51 21 22 37 22 22 32 64/63 29 45 28 23/26 22 29 22

Graph showing the times and results of participants

Male Female Graph to show male / female choices.

Choices in comparison with eyesight. Colour Blind Perfect eyesight Unsure Long Sighted Unsure, wear glasses Short Sighted

Station Five ,[object Object],Not as many trends as I would have hoped although definite trends as participants added more red, they also added more green. People found the task quite difficult but enjoyed it. Shows that people perceive colours very differently. Perhaps 0-100 is not enough units to be able to colour match sufficiently. Also, the parcan may be producing fewer bits than originally anticipated.

Future work ,[object Object],[object Object],[object Object],[object Object]

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