what is the speed of dark?

 

Asked by Travpena 8 years ago | last reply 8 years ago


How to make glow in the dark pebbles?

How to make glow in the dark pebbles?  (that will glow several/many days/weeks)

Asked by marciacatt 9 years ago | last reply 9 years ago



Where can I buy glow in the dark rigid plastic sheet ?

You know the stuff those glow in the dark stars are made from? Where in the uk can I buy a sheet of that maybe a4 size. Thanks!

Asked by robives 3 years ago | last reply 1 year ago


do we need a certain kind of laundry detergent?

Do we need a certain kind of laundry detergent for spooke water

Asked by 9 years ago | last reply 9 years ago


Does anyone know how to make an authentic viking-age clamp for boneworking etc?

I currently produce worked bone items for the re-enactor market, and would like a clamp that holds items from 3-4mm securely, but won't be assaulted by authenticity specialists for trying to use.

Asked by De_frog 9 years ago


My instructable published but it is not visible.

My instructable says it published but the picture is darker that it should be and when I click on it I get this message: We're sorry, we couldn't find that one! I hope it isn't lost. The URL for the instructable is: https://www.instructables.com/id/22-Bit-Binary-Counter-for-Atmega328/ I have had trouble publishing the last three instructables I have written. Am I doing something wrong? Are other people having this problem?

Posted by JRV31 2 years ago | last reply 1 year ago


Dark Side Of The Moon? Answered

I have been taught that we always see the same side of the moon.  The other half is called the dark side of the moon.  Is this dark side really dark, or is it really bright when the moon is a new moon?  I know this is a stupid question, but I just wan't to clarify with so many dark sides.

Asked by jj.inc 6 years ago | last reply 6 years ago


Is there any easy way to get rid of dark circles under eye? Answered

I didn't have any dark circles, even few months back. I know it's not possible to get rid of it overnight. But, is there any natural and effective way?

Asked by pmahi 6 years ago | last reply 5 years ago


Intro picture too dark

My instructable is published now but the picture I see when I click on Explore=>Recent is very dark. When I open the instructable the picture is right. Here is the URL: https://www.instructables.com/id/ATtiny84-Binary-Counter-Up-and-Down/ Thank you JRV31

Posted by JRV31 2 years ago | last reply 2 years ago


Glow in the dark fabric

I dunno if u've seen the glow graffiti but it think its an awesome idea but not worth $50 http://www.thinkgeek.com/gadgets/lights/b5ba/i just wanna take some fabric or canvas and make it glow in the dark... anyone know how i can do this?

Posted by orsinichris 9 years ago | last reply 8 years ago


can I roast columbian coffee further in a popcorn popper?

My brother bought 8 O'clock coffee in the "columbian" variety. he bought it for my espresso machine. I really prefer dark roast for my coffee. is there a way to take the medium roast columbian coffee and roast it to full dark awesomeness?

Asked by codongolev 9 years ago | last reply 8 years ago


Best dark metal for solar absorbance.

What's the best metal for absorbing sunlight? ie, darkest. It needs to be immersed in ethanol, which will dissolve pretty much any paint etc. I've tried steel with some kind of enamel or anodised layer, but the eths started eating that too. Also whatever it was seemed to reduce the heat getting into the ethanol. And are there ways of making metal darker, chemically or through heating? I've been recommended getting something rusty and using a rust converter, which turns the oxidised layer into a phosphate, which is dark and might work well. Also.. are there other characteristics I should be paying attention to in order to maximise the amount of heat transferred to the fluid, like conductivity, emissivity, etc? Cheers.

Posted by SolarFlower_org 9 years ago | last reply 9 years ago


Any guidance to Filming and taking photos in the dark? Answered

Hey everyone ! I have been using my galaxy S3 for my Instructables photos and I keep running into a problem. When I am able to pour some good light on it, I can take some really nice photo's. but as soon as a try to take a picture of any of my Led projects (in the dark) the quality goes out the window! (I assume because it can't focus in the dark?) I included two of the good photos as a comparison the the Disco ball. **I still need to be able to take shots in the dark, to highlight the Led's / project lighting** Any thoughts on how I could Improve both photos and vid? (Preferably with my cell) I've tried with and without flash, different angles and even focused it with the lights on before turning them off to take the photo.  https://www.instructables.com/id/Simple-20-Disco-ball-with-lights-/ Hopefully someone can offer me some guidance; These Pics really don't look nice >.< (Best answer given in about a week !)

Asked by Wired_Mist 3 years ago | last reply 3 years ago


I brought Amnesia The Dark Descent and it's saying 'FATAL ERROR!' and asking about my graphic card and log file, help? Answered

Yeah, I just got it tonight and it keeps saying 'FATAL ERROR: Renderer #0 ould not be initialized! Make sure your graphic card drivers are up to date. Check log file for more information.' Wat does it mean by 'log file' and what should I do to find it and/or how will it help? Will I need ot buy anything for it to work? Should I re-install it? Also, I brought it on steam.

Asked by george0411 7 years ago | last reply 4 years ago


how do you get a photo sensor to turn on in the dark instead of in the light?

Is it possible, I am trying to do this so I can make a laser trip wire, but it turns off in the dark instead of in the light.

Asked by rockandjay 9 years ago | last reply 9 years ago


The Dark Side of Crafting?

I was recently sent this update from UC Berkeley and Indiana University, and thought I would pass it along.  I have never had a brush with the "Dark Side" of crafting they describe here.  Have you? Do you sew clothes, print posters, or shop for craft supplies only to realize your craft has negative effects, e.g., on the consumer or society at-large, morally, socially, and/or legally? Do you see a “dark side” to craft? If so, UC Berkeley and Indiana University researchers conducting a research project on handcraft and computing would love to talk to you. We will conduct interviews by instant message, email, phone, or in person within the next few months. To help us with our research, please email Daniela at daniela@ischool.berkeley.edu, Jeff at jbardzel@indiana.edu, or Shaowen at selu@indiana.edu.   image blatantly stolen from pirateluv which just has so many other cool things on it too.

Posted by scoochmaroo 7 years ago | last reply 6 years ago


Do you know google in black? Answered

Do you know google in the black theme?http://black-google.bpled.com/en_uk.phpVerry cool man!

Asked by codz30 9 years ago | last reply 9 years ago


Computer room keyboard light

   I want a dimmable low-wattage led lamp to mount to my computer desk shelf. It will sit above the keyboard, shining diffuse light down but not directly at me.    I could mount it underneath with screws, or have it sit on the shelf above, looking over it.    It'll be powered by 120V 60Hz, so no batteries required.    I have two design problems that I need to solve before I start.    First, I need a diffuse light source that will light up my entire keyboard without blinding me with a direct view. This should be a warm white rather than something bluish or cold, since I don't want to lose my night vision. (I watch movies and do graphics on the computer at night.)    I haven't been able to think of anything that will fit back far and high enough that my slouched posture won't cause a problem. I thought of an opaque diffuser that the light would shine up into, but the geometry seems a little tight.    Second, I would like recommendations for the dimmer control. I want to dim the light right down to nothing, and switch it off, easily and quickly for when I'm stumbling off to bed. It needs to be a bit sturdy to handle my fumble-fingered ways, and quick to find.    I appreciate any suggestions anyone can come up with, and I'll be glad to gab on more about what I want if you have any questions.    The shelf is 28" or more from my eyes when seated at the desk, and about 30 degrees of it is currently blind to me at maximum slouchiness. It sits 6.25" above the desk, and I can easily spare 4" of clearance under it; the only other thing that has to fit there is the keyboard itself with a little wiggle room.

Posted by Trelligan 8 years ago | last reply 8 years ago


Free!! (Dark / Light Sensor LED Circuit)

Giving away free circuit - world's best dark / light detecting sensor circuit for LEDs... see my projects!!

Posted by pandyaketan 6 years ago | last reply 4 years ago


GID Vials, Tritium, TRASERS, Powders and Chemicals GLOW IN THE DARK!

TRITIUM! So I get a lot of questions from my post and instructables. Tritium Vials are Radioactive Hydrogen H3, also known as hydrogen-3 is a radioactive isotope of hydrogen. It is contained in small glass vials coated in colored phosphor then encased in glass or sealed plastics. These are commonly seen in Gun Sights, Watches (TRASERS) and some Emergency Exit Signs. http://en.wikipedia.org/wiki/Tritium_illumination Small amounts are legal and for approved uses. Read the NRC guides Typically the Trit vials are small, expensive and dim. The latest GID (Glow in the Dark) Chemsticks, LED's and GID Powders or paints seems much more effective and usable. * Cyalume, as used in a lightsticks, emits light by chemiluminescence of a fluorescent dye (also called fluorescor) activated by cyalume reacting with hydrogen peroxide in the presence of a catalyst, such as sodium salicylate. It is the most efficient chemiluminescent reaction known. up to 15% quantum efficiency. http://en.wikipedia.org/wiki/Chemiluminescence New LED low power requirements and high Lumen or light output have provided many solutions that are low cost, high power and longer lasting. GID Paint or Powders are "charged" with light or daylight sources as with your traditional kids toys or stickers. New products are brighter, glow longer and are now waterproof, have many colors and applications. http://www.4physics.com/catalog/GIDinfo.php Also this is occasionally confused with the chemical illumination. However these paints powders and materials use common phosphorescent materials include zinc sulfide and strontium aluminate. Use of zinc sulfide for safety related products dates back to the 1930s. However, the development of strontium oxide aluminate, with a luminance approximately 10 times greater than zinc sulfide, has relegated most zinc sulfide based products to the novelty category. Strontium oxide aluminate based pigments are now used in exit signs, pathway marking, and other safety related signage. http://en.wikipedia.org/wiki/Phosphorescence Hope this helps! 01/2011 - Update Source for Materials http://www.darkniteglow.com/glow-shop/ ERCK www.Candlepowerforums.com Additional Tritium Resources * U.S. NRC: http://www.nrc.gov/reactors/operating/ops-experience/grndwtr-contam-tritium.html * U.S. EPA: http://www.epa.gov/radiation/radionuclides/tritium.htm * U.S. DOE (Argonne National Lab): http://www.ead.anl.gov/pub/doc/tritium.pdf * California EPA: http://www.oehha.ca.gov/water/phg/allphgs.html * University of Idaho: http://www.physics.isu.edu/radinf/tritium.htm

Posted by erckgillis 7 years ago | last reply 7 years ago


Do people make requests for instructables too? + growing glowing geodes + making your own slime

Hey, I saw a instructible or two featured on here that reminded me of something that has prompted a question in my mind. Is there a typical way that people make requests for instructibles, aside from comments on existing instructables, or here in the forum? Or is this forum the typical place (I haven't scanned through to find out on my own)? Anyway, I have a request that I'll try to lay out here... In a badass local toy/education/science shop, they sell these kits of weird or "gross" science experiments. Like growing glowing geodes, making volcanoes, making glowing slime...stuff like that. The problem is, these kits are a bit pricey, but they DO have an ingredients list on the outside of the box. I took photos of the kits/lists in the store, with the idea that I could probably find info online to be able to replicate the "experiments" more cheaply by picking up the components elsewhere. I haven't gotten around to it, and so I thought Instructables would be the perfect place for people that would do the same thing and share the info to all of us. Specifically, I really want to do that glowing geode thing. Some of the other kits were pretty spiffy too, but I don't have the info in front of me to give you further details. (I'm sure I could google around, and eventually I'm sure I will).

Posted by Subvert 11 years ago | last reply 11 years ago


how to make glow in the dark paint for a room?

Asked by 9 years ago | last reply 9 years ago


how to make a dark watermark?

Asked by smoke_d8 8 years ago | last reply 8 years ago


how to make glow in the dark paint for a room?

Asked by 9 years ago | last reply 9 years ago


does anyone know how to make glow in the dark tennis balls (or have some suggestions)? Answered

I need help making glow in the dark tennis balls for a friend. these tennis balls will actually be used for tennis, and should be able to be seen clearly in the dark. If you have any ideas on how to get a tennis ball to glow in the dark, suggestions on glow in the dark paint, or anything else relating to this project, I would be glad to hear about it.

Asked by biolethal 9 years ago | last reply 9 years ago


Windows - Monitor turning itself off after a few minutes.

Today I faced a problem that according to my internet research on the tablet is quite costly and annoying. First off my specs for the computer in the basic form: Windows 7 on 32GB of RAM with a decent Nvidia graphics card. Problem: After a few minutes of use the screen suddenly goes dark, like when going on standby but Windows itself still runs as normal. Quite often when it happens the screen brightness goes up to max right before the screen goes dark. Taking out the monitor cable and pluggin it back in usually gives the screen a few seconds until it goes dark again. Official solution as suggested in many forums and knowledgebases: Take check if the problem is the same when using a different video port on the card - checked and it was for me. Check it the fan is working as it could be the card shuts down from heat problems - checked and cleaned the heatsink while at it. Replace the graphics card if problem persists - Why the hell would I do that???? My solution: Take the card out. Clean it with some air, especially the heatsink and fan. If have and old school office using paper and pen you might have one of these fancy easers with a blue part that is really coarse and has some fine particles in it. They were used to remove ink or pen writings instead of pencil marks. If you don't have one take some aluminium foil and crunch it to a small ball. Use the eraser/foil to clean the contacts of the card. The gold plating should come out nice and shiny, if it still looks dull keep working it a few minutes longer. Just rub from one side to the other over the contacts. Once fully shiny remove all debris by blowing it off - pay special attention to the tiny gaps between the contacts!! If in doubt use an old toothbrush (dry and clean of course) to clean between the contacts, a cottum bud works too if you are desperate. Put the card back into the computer and you have a really high chance the monitor stays on and will work fine from now on.

Posted by Downunder35m 1 year ago | last reply 1 year ago



welcome to the dark side

Welcome new ones

Posted by darth acexxacer 10 years ago | last reply 10 years ago



If 96% of the known universe comprises, Dark Matter (and Dark Energy), why can't we tap the energy

To feed an energy starved world? SOURCE :Claims by modern physicists.

Asked by wingcodavid 6 years ago | last reply 6 years ago


How do I fade dark blue jeans?

I have purchased a couple of pairs of dark jeans. Is there any way to expedite the fading process?

Asked by 9 years ago | last reply 9 years ago


how to get rid of dark circles under eyes?

Asked by luvbruins 6 years ago | last reply 5 years ago


What can I make with glow in the dark paint? Answered

Asked by harry potter rules 7 years ago | last reply 7 years ago


How do you beat the boss on Dark Cloud, the Play Station 2 version?

I have been trying to beat this thing for a half of a year. So if anyone will help me please do cause I'm not giving up any time soon!

Asked by ATL94 9 years ago | last reply 9 years ago



A good home remedy for dark eye circles, anyone have one??

Asked by Happy2917 7 years ago | last reply 5 years ago


Help with simple transistor circuit.? Answered

I want the LED to turn on when it's dark. But  it remains on and taking out the LDR doesn't affect it. I couldn't post a picture but i made a replica in Fritzing EDIT: The transistor is 3904 NPN.

Asked by Hafiz Mohammad Shayan Tariq 6 years ago | last reply 2 years ago


How do I get rid of bags, dark circles under my eyes? Answered

Any home remedies or low cost solution would be great!

Asked by Linda145d 9 years ago | last reply 3 years ago


what's the dark grey powder in a firecracker? Answered

I've been taking apart firecrackers, and I've found out that the light grey stuff is the flash powder. so what's that dark grey stuff under it? is it just filler? what's it's purpose?

Asked by codongolev 9 years ago | last reply 8 years ago


Entire glow in the dark room?

Ignoring the practicalitites of expense, chemicals etc, would it be possible to paint and ENTIRE room, or at least a whole ceiling, in glow-in-the-dark paint? I'm thinking what would it be like to have an off-the-grid room that would have a useable amount of light, using glow-in-the-dark paint, for say 4 hours after sunset. Can anyone find any pictures of a room painted like this?

Posted by trialex 11 years ago | last reply 7 years ago



LCD contrast issue?

Just got a LCD 20X4 character screen. 10K pot connected to 5V. Can controll contrast. problem is, only 1/2 of it???"--------------FADED----------------""--------------DARK------------------""--------------FADED----------------""--------------DARK------------------"only 2/4 rows of character blocks go dark when full contrast. why is this!!!

Posted by Killa-X 10 years ago | last reply 10 years ago


Necromancy?

Hello. I recently started showing strong behaviors of an energy vampire, or a psychic vampire. I am afraid. I'm not sure what to do or where to go. Today, I understood that vampires are dark creatures, means I have some dark magic to use. I want to learn necromancy. I have heard about "Communing With The Spirits", A book, So can someone please point me to an ebook? or eny other scource of info that can help me?

Asked by netbus 8 years ago | last reply 8 years ago


Iron Eye video

I finely finished it yeah!ok here's the video:

Posted by the_burrito_master 10 years ago


Midnight Football (soccer)

Me and my friends have just finished GCSEs and have decided to celebrate with some midnight football. We're going to be playing in a Multi Use Games Area, essentially a big cage with a goal at each end. We don't want to floodlight it, and so we're thinking glow sticks on us and around the goals. We need a way to make the football glow or been seen however and this is where you come in. Any ideas?

Posted by DELETED_CondorMcG 9 years ago | last reply 7 years ago


How would one go about designing a dark ride cart and track?

Just curious how would you build your own darkride cart and track? with an emergency stop. maybe arduino?

Asked by undftdking 7 years ago | last reply 7 years ago


Write on anything: INexpensive glow in the dark writing

Inexpensive glow in the dark writing Desired effect:Paint a Wall or furniture write on it or draw then it fades 1 less than a minute then you can draw again Materials: -1 UV LED (low power any chinese anti fake bill keychain will do) -Any surface -Common glow in the dark paint or powder Low grade Zinc sulfide glow in the dark paint (or strontium oxide aluminate glow in the dark paint ) We have to find a way to lower the performance of the compounds so that they glow for 10-40 seconds maximum instead of hours. WHAT IS NEEDED: A CHEMICAL DETERRENT TO LOWER THE PERFORMANCE OF THE PAINT: HELP IS NEEDED I DO NOT KNOW WHAT COMPOUND TO USE. (IT MUST DECREASE THE PERFORMANCE BUT NOT THE BRIGHTNESS in dim light) Help complete this instructable, (pretty please)

Posted by dejabox 11 years ago


Inexpensive glow in the dark writing: WRITE ANYWHERE

Inexpensive glow in the dark writing Desired effect:Paint a Wall or furniture write on it or draw then it fades 1 less than a minute then you can draw again Materials: -1 UV LED (low power any chinese anti fake bill keychain will do) -Any surface -Common glow in the dark paint or powder Low grade Zinc sulfide glow in the dark paint (or strontium oxide aluminate glow in the dark paint ) We have to find a way to lower the performance of the compounds so that they glow for 10-40 seconds maximum instead of hours. WHAT IS NEEDED: A CHEMICAL DETERRENT TO LOWER THE PERFORMANCE OF THE PAINT: HELP IS NEEDED I DO NOT KNOW WHAT COMPOUND TO USE. (IT MUST DECREASE THE PERFORMANCE BUT NOT THE BRIGHTNESS in dim light) Help complete this instructable, (pretty please)

Posted by dejabox 11 years ago | last reply 11 years ago


Darkness Map date Collection Device by member gennaveeva

Too many errors in this program. Did the author ever try to upload this program.

Posted by rmas 5 years ago | last reply 5 years ago