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Erina

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About Erina

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  1. I can confirm now that after six months, under the same wet kitchen use conditions, there has been no re-growth from the mould. I also tried this on white bathroom caulk around a stand up shower and it worked exactly the same, leaving the caulk looking like the day it was first laid. This is a solid technique and very easy the achieve.
  2. Surprisingly, after eight days, the silicone now smells sweet?!
  3. Interesting. I've only just done the experiment, so I'll have to see, but I'll be keeping an eye on it..
  4. I used just household bleach : "Domestos Extended Germ-Kill Citrus Fresh Toilet Bleach with CTAC 750ml" Ingredients : Cationic surfactant; Soap; Non-ionic surfactants; Disinfectant: Sodium hypochlorite 4.5g per 100g. < 5%: Chlorine based bleaching agent (Sodium Hypochlorite); Perfume.
  5. I assume so, I just wondered what the underlying chemical process was to turn it from white to brown?
  6. Well, it was only for 30mins in total, and I did have the window open (and I'm alive to tell the tale), but you're probably right. Any ideas on why it went brown please?
  7. Recently I finally decided to rid my silicone/steel trivet of the mould that had been building up over the years through normal kitchen use after being left rolled up when not in use (a design feature). Submerging it in bleach for 24 hours the majority of the dense mould colonies succumbed to the bleach and disappeared: changing from black to white (or a lighter shade of the green silicone). After submerging them for 12 hours in a bicarbonate of soda bath to attempt to rid the silicone of the bleach odour, to no avail, I heated the silicone in an oven for 15mins at 120ºC (twice) in order to attempt to bring the oils (odour) to the surface of the silicone to be washed away. I didn't have too much luck with this and the baking process released a fairly acrid smell into my room so I didn't persist, but did have some success. However, now the white areas (where the mould once was) have turned brown, why is this?
  8. Heating foodstuffs in a domestic electric oven is best achieved under conditions with an even air flow to spread the transfer of energy, typically using a venting system with a convection fan. However, could the same not be achieved solely with an internal fan to radiate the air inside? If so, then it could negate the need to puncture the internal membrane of the oven with fan and ventilation access, as a magnetic stirrer system could be employed to circulate the air. With an electric system there would be no need to worry about ventilation of gases as well. One issue could be the temperatures themselves, as I understand that magnets degrade under heated conditions, but perhaps there could be a material to better protect it from the heat?
  9. Interesting read, I don't have access to the PDF however, but it seems like a lot of the thinking here coincides with what I was looking to achieve, although I have more flexibility as I don't plant to have the same size restrictions. I never thought about the width of the fibre optic diameter, that would probably cut down on the complexity, and looking into the matter of the shape they don't have to be circular either, I could use square cables and gain the otherwise missing negative space.
  10. I would like to be able to passively project a humanly recognisable object over a dense array of fibre optic cables, over a distance of 100m, without the need for electricity. 1. To project more detail than a silhouette, light projection onto the object itself is required. Could diverting some of the cables toward a natural daylight source be used to sufficiently illuminate the object from a distance of 5cm? 2. If so, what percentage of the cables would be needed to illuminate an object 5cm away e.g. every other cable? 3. I assume that the array of cables is capable of transmitting the image distortion free if curved with the minimum bend radius of an fibre optic cable?
  11. Kohler the company produce a simplistic perpendicular designed outlet, flush from the wall, which produces a crystal clear jet of water for use in the domestic bathroom environment: https://www.faucet.com/kohler-k-923-polished-chrome-modern-wall-or-ceiling-mount-bath-filler-with-95-inch-2-4-cm-orifice-from/f231619 I would like to know how much control could be had from a static system regarding where the flow would finish? I understand that there are very strict principles to be observed in order to achieve the Laminar effect and it doesn't seem like there would be much room for manoeuvre with this design i.e. only on and off? What if the water were a widened sheet design, such as a uniform waterfall, could there be more control over the rate of flow and direction, whist still maintaining the clear effect? I am interested in the single jet stream for use to wash my hands in a small bathroom basin, but utilise the sheet of for washing up cutlery and crookery in a larger basin.
  12. Usually drinking water fountains are pathetic things and quite unappealing. Assuming that the fountain could be guaranteed to be clean (members only) people wouldn't be so afraid to use one. However, to make it more appealing, rather than a little winkle of a squirt, I think that the visual appeal of crystal clear Laminar flowing water would be a big step in disarming people's fears. However, the entire flow must be in a single direction to achieve this and I should imagine that such a sensitive area as the mouth wouldn't appreciate the full force of the water hitting it directly. However, if more spacial in design, such as with a spherical / mushroom shape, then the force should be greatly reduced, but the effect still appealing. My idea is to have a drinking fountain that splays out equally so that multiple users could drink water at the same time from a beautiful display that shouldn't hurt. First of all, I assume that these pumping machines can push drinking quality water? Also, I would like to better understand how the water reacts with light: I assume that while the sheet could be projected on to (as with the time in the Osaka City Station, Japan waterfall display) it would also be transparent and light would pass through? Would it behave as fibre optics do and only display the light at the termination point as gravity pulled it to the surface i.e. creating a highlighted perimeter circumference, which would require the light to bend with the water, or would the entire sheet glow? The design in the video below is not what I had in mind, I am simply looking for a single self contained stem poking up to produce the drinking water on command:
  13. Many thanks for your help ! Assuming if the magnets were woven into an upper body jacket (to better distribute the forces on the human body) could there be another chute with magnets arranged to zip the jacket back up to the top for the next person without power? Similar to how a battery moves around the inside of a coil, but without a current.
  14. Although it would be a leap of faith, how reliable would it be for a human to strap on an easy to wear magnetic jacket/belt and jump down a strait tube of which the temporary Eddie current would slow the person down according to Lenz's Law so they would reach the end of the tube at ground level reliably and without injury? Sort of life a Fireman's Pole, only without the pole.
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