View allAll Photos Tagged Filaments
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
As introduction, textile silks are often produced from the cocoons churned by the larvae of the MULBERRY SILKWORM.
In general commercial silks are produced through the following processes:-
(a) SERICULTURE - Cultivation of silkworms.
(b) HATCHING OF EGGS - The tiny eggs of silkworm moths are incubated for about 10 days until they hatch into a larvae (caterpillar)
(c) FEEDING - For about period of 6 weeks, the larvae are fed huge amounts of chopped mulberry leaves, during which it sheds its skin 4 times until it is ready to spin the cocoon
(d) SPINNING THE COCOON - Over the next 4 days, the worm rotates its body in a figure 8 movement constructing a cocoon, and producing silk filaments
(e) REELING THE FILAMENT - Cocoon is treated with boiling water, and silk is unbound from the cocoon by softening the sericin, and silk filaments are then reeled from the cocoons, one strand at a time.
(f) THROWING - Raw silks are then twisted into strands sufficiently strong for weaving or knitting...
Which then makes me ponder, if there are any other insects that produces silk (apart from silkworms)? Here's your homework, do a little research, and let me know :)
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
The dream begins with a teacher who believes in you, who tugs and pushes and leads you to the next plateau, sometimes poking you with a sharp stick called "truth"
Ah, the time of year, when final grades are due and students politic for a couple of extra points that would move them from one letter grade to the next and teachers grapple with what that might truly mean for the student. A math teacher friend who lives in a more 'black/white' world points to the calculations, but my world tends to be more gray. Using rubrics and being very transparent about the evaluation system and formative feedback from the beginning appears to do little for those who are more interested in a grade than in learning. The dilemma is compounded when the students are prospective teachers, but in the end, the sharp thorns balance [to the best of my ability] with the beauty in the eye of nature. Naples, FL
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones
Taking pictures of a small light bulb, I noticed the free end of the filament vibrating rapidly.It was a complete blur, and added to the shot...
In this image, a compilation of three independent Sminthurides cf bifidus/penicillifer found in the same sample, male, female, female. I picked the largest specimens from the sample.
(left to right, image I, II and III)
In image I, 2 branches are visible and the tip of the unguiculus (uu).
In image II, 3 branches are visible and the the tip of the uu.
In image III, 2 branches of the filament are visible and the tip of the uu is hidden - probably due to the angle of the specimen.
Literature research;
I learned that the apical filament is branched, but this filament is not a direct extension of the tip of the uu. Thus, NaOH is not useful to deter an assumed separation of the filament and the empodium.
Tough one, but I found some text about these species. Fjellberg lists penicillifer as having many branches. In his drawing (103C; page 180), the filament on claw 3 is drawn with many branches, but the tip of the uu is also drawn and deviates. see also drawing (104F, page 180).
Ferreira et al. (2021) describes Sminthurides bifidus as having 2-3 branches in the apical filament. Here also, the drawings distinct the tip of the uu from the apical filaments.
10.1007/s13744-020-00831-5
Two purple-gelled flashes (580EX (thanks, Alan!) and 580EXII) @ 1/16 to left and right with baffles to keep the background dark, triggered via ST-E2.
The significant change compared to previous efforts was dumping the softbox and using the flash direct, which allows winding back the flash power a bit.
lightbulbs, vintage radio vaccuum tubes, polymer, brass, copper, anodized aluminum, swarovski stones