MyVidster Tag results for pencil

make an aa battery
Bookmarked 570 weeks ago
in this video well show how to make an aa batterywarning: potassium hydroxide is corrosive zinc is a heavy metal and manganese dioxide is an irritant wear gloves when handling themget a 5 ml plastic syringe the one i got was from a company called bd and the catalogue number was 309603 discard the plunger and cut off the tip also cut the back up to the 5 ml markget a 5 by 3 cm sheet of zinc metal about 05 mm thick cut into the 3 cm side a series of cuts about half a centimetre long roll the sheet so it fits into the syringe tube dont roll it too tight so it falls out it should be big enough that it stays in by frictiononce you have the right diameter pull it out and bend inward the tabs we cut earlierthis should now form a zinc canprepare the cathode powder by mixing 8 grams of manganese dioxide and 3 grams of carbon powder this will provide enough cathode powder to make about ten batteriesthe carbon is just a conductor for the oxidant which is the manganese dioxide the best manganese dioxide to use has the gamma type crystalline structure the more common beta type crystalline structure will still work but will give lower current so try and get the gamma type if you can if you make your manganese dioxide electrochemically then it will be of the gamma form while manganese dioxide made pyrolytically is usually of the beta formnow get some filter paper or a coffee filter and cut a rectangle about 5 by 10 centimetres to that pour a five centimetre line of about one gram of the cathode powder also insert a 7 centimetre length of 2 mm thick pencil lead into powder roll that into the paper and fold over one side so it doesn039t spill outnow get the zinc can we made earlier and insert the cathode roll into it cut off or tear any excess paper if there is too much cathode powder that it doesn039t fit then youll need to pour some off if there is too little then youll need to take it out and add morenow insert the assembly pencil end first into the syringe container from earlier make sure the pencil lead goes through the hole in the tip then break off the exposed pencil lead and leave 2 mm for electrical contactfill the battery with electrolyte by dropping the whole thing in solution of 30 g of potassium hydroxide in 50 ml of water leave it for several minutes to soak in and then take it out and leave it on some tissue for another several minutes to drain out any excessand thats your battery mine had an open circuit voltage of about 1412 volts and two of them could power a cheap digital clocknow i know some of you are wondering what the electrochemistry is behind the alkaline battery under load the zinc anode reacts with the potassium hydroxide electrolyte to give zinc oxide and two electrons these electrons then go through the load and at cathode they travel through the carbon to the manganese dioxide the manganese dioxide reacts with water to produce manganese iii oxide and hydroxide ions the reactions stops and the batteries dies when either the zinc or the manganese dioxide is consumed or when the waste products build up and block further chemistry

repair
Bookmarked 741 weeks ago

one bride two makeup looks plus vitiligo east meets west makeup tutorial
Bookmarked 443 weeks ago
wedding prep can be stressful especially if you are having twoone indian one british in my latest video jemma comes to me for help with her vitiligo and red lip bridal makeup looks follow me on instagram here http:instagramcomlisaeldridgemakeupjemmas wedding dress designer sabina motasem - bridal wear - : http:lisaemeuk28203-28191jewellery - kelly spence - bridal accessory design: http:lisaemeuk28205-28191for all the products that are featured in this film click on the links below:urban decay - eyeshadow primer potion: http:lisaemeuk11812-28191paula dorf - wet dry eye color brush: http:lisaemeuk25705-28191chanel - large tapered blending brush - 19: http:lisaemeuk27457-28191nars - loaded eyeshadow palette : http:lisaemeuk28196-28191paula dorf - sheer crease brush: http:lisaemeuk2743-28191zoeva - luxe pencil brush 230: http:lisaemeuk26862-28191ekia - radiance cleansing water eau micellaire eclat: http:lisaemeuk28058-28191laura mercier -

hip hop pen beat - shane bang
Bookmarked 716 weeks ago
pencilpen beat performed by shane bangplease subscribe and check out my channel for more videos like thisfollow mehttp:wwwfacebookcomimshaneandibanghttp:wwwbangshanetumblrcom

pen head
Bookmarked 716 weeks ago
watch this-

hardworking receptionist enjoys intense double pussy pounding on lunch break
Bookmarked 2 weeks ago
watch hardworking receptionist enjoys intense double pussy pounding on lunch break 2025 runtime: 44:12 categories: desk floor orgy training break birthday sweaty newbie paperwork lunch temptress hr receptionist clerk conference meeting execs copy room cubicle pencil skirt hornyhill hornyhillse

art with salt - eric northman alexander skarsgard true blood portrait drawing - theportraitart
Bookmarked 762 weeks ago
feel free to check out my site: wwwtheportraitartcomanother video on playing with your food check out my chocolate lion video for the previous playing with food

conan o039 brien as seen by artist john kascht
Bookmarked 760 weeks ago
in this film quotfunny bonesquot artist john kascht gives us a behind the scenes look at the creation of his portrait of conan o039 brien explaining his artistic process and approach to caricaturekascht039s portraits of alan greenspan and warren buffet can be seen in our exhibition quottwentieth century americansquotpresented by the national portrait gallery039s quotgallery 360quot series for more on the video see this article in the npg039s blog: http:face2facesiedumy_weblog201104how-does-he-do-that-the-secrets-of-drawing-a-facehtml

learn colors with car parking garage learn colors for kids cars truck videos for children
Bookmarked 413 weeks ago
learn colors with car parking garagelearning videos for toddlerscome play enjoy learn and have awesome fun time with usfacebookhttps:wwwfacebookcompencilbee31google plushttps:plusgooglecomu0116034929168624992607twitterhttps:twittercompencilbee3linkedinhttps:wwwlinkedincominpencil-bee-233377137pinteresthttps:wwwpinterestcompencilbeewebsitewwwpencilbeecomplease watch and have so much fun

asian woman shifted her swimsuit to show you a juicy nipple
Bookmarked 44 weeks ago
watch asian woman shifted her swimsuit to show you a juicy nipple 2024 runtime: 08:40 categories: anime art asian asian big tits big boobs big tits drawing drawn hentai japan japanese japanese big tits nipple paint pencil picture swimsuit cosplay hornyhill hornyhillse

charles quotsparkyquot schulz draws charlie brown official
Bookmarked 742 weeks ago
charles quotsparkyquot schulz talks about charlie brown as he draws him playing the piano in this official video clip from the never released documentary quota boy named charlie brownquot peanuts worldwide llc

portrait of anahi
Bookmarked 760 weeks ago
kindly requested by martina here039s the portrait of anahi especially dedicated to my good friends from mexico hope you039ll like it enjoy the videofull picture here: http:thedrawinghandsdeviantartcomartanahi-206971600b pencil on a4 office paperapproxtime: 2h 10mmusic: dave bentley - i got my own thingalbum: don039t look now 2011http:wwwjamendocomenalbum88598the drawing hands: http:wwwthedrawinghandscom

go hard in my flawless deep amp wet ass - marimott featuring: max feralberryy
Bookmarked 47 weeks ago
watch go hard in my flawless deep amp wet ass - marimott featuring: max feralberryy 2024 feralberryymax runtime: 10:46 categories: feralberryy max anal cumshot hot sexy ass doggystyle real amateur homemade booty pantyhose big ass big tits big cock big boobs anal sex fuck ass pencil skirt marimott hornyhill hornyhillse

two handed drawing - theportraitart
Bookmarked 728 weeks ago
my website: http:wwwtheportraitartcompretty exhausting to draw2nd attempt