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PAWSitively Petland Show - What's a Poshie (?), Treat Communication, Science Diet

Is the Poshie the right mix breed for you? We are talking training with your dog using positive reinforcement. Why has Science Diet been such a great food for so ...

Mixing Both Diet Coke & Coca Cola, with Milk!!!! (School Science Project)

A science experiment depicting the classic Coca Cola Milk mix, with an added Diet Coke to see if a similar or different reaction takes place once combined with a ...

Color Mixing Wheel - Sick Science! #019

Our visual division here at Steve Spangler Labs loves the science of color mixing. We've mixed gels, fizzing tablets, and even different colored lenses together to ...

User Comments

Alejandro Torres commented on 12 Jul 2012

hey steve spangler i was thinking of doing this for my science experment at school but now i want to do bouncing bubbles and now i want to do u make science fun and u make me think creative oh and i wanted to this science experiment because of the fat in the milk and what makes the big explosion now im thinnking of trying to make scratch that try to make a bubble out of milk with food coloring in the milk so much science u inspire me- a kid who loves to learn :)

Taylor Reed commented on 24 Nov 2012

Very good, but he didn't use purple and yellow to begin with, what's happening is: the human eye sees at about 25 fps (frames per second) and the cardboard disc is moving faster than our eyes can see. So our brain is trying to make sense of it all. With all of this going on, it tricks our brain into thinking "Man... red and blue... Whoa! That's moving fast now, what the heck? I know blue and red make purple, so it must be purple"

Cosmo Guerini commented on 16 Sep 2012

My guess is that, as you spin the wheel, the light reflected by the various colors gets reflected at moments close enough that it reaches your eye at relatively the same time, forcing your brain to interpret both colors at once, producing a color that represents a blend of those two colors. Please excuse the run-on sentence, I'm getting sleepy. :)

luke irving commented on 07 Mar 2013

The colour mixing is an illusion. The eye is trying to keep up with he constant changing colours but due to the eye's lack of motion observation, the mind creates the two 'flicking' colours and combine them. If possible, the human eye is able to keep up with the spins, the trained mind will be able to determine the true colours

Mark Robins commented on 01 Jul 2013

With a monitor red, green and blue are added together going from black when none of the colours are present to white when they are equal but with ink each time a colour is added you are subtracting colour from white giving black when red, yellow and blue are equal.

TheGreatNordini commented on 03 Jul 2012

The eye can't follow the colours fast enough while it's spinning. The brain holds the information back for a small amount of time, and in that time a new colour comes up. Because of this, the brain mixes the colours together to get the mixed effect.

Emma Earle commented on 10 Apr 2013

I guess that the colors are mixing because : 1.the more faster the circle spins the more colors mix 2.the circle haves the primary colors so they combine with the movement and I can answer that question with just 9 years old

potatojuice321 commented on 22 Mar 2012

LOL nothing made by the whole human kind has ever went faster than speed of light. this trick is based on how the human eye isn't developed enough to see very fast motion, causing a human eye see the colors mixed.

csensesfail92 commented on 20 Mar 2012

it's spinning faster then the speed of light and the colors are both touching the same light that is refracting off it causing the colors to mix. ...and the nobel prize in physics, goes to me.

Chloe Sykes commented on 22 Jan 2013

i think this happens because it is spinning so fast the color molicules combine and form a new color but as it stops the color molicules seperate they become there origanal color

redXsh4rp13 commented on 22 Aug 2013

What happens is the human eye can only see up to (if I remember correctly) 90 fps, so if the colors are spinning faster than that, the eye just put them together. :3

dst25 commented on 13 Jul 2012

its cause human brain cant proces the images its geting so while it has started procesisn the red, the blue is already in red colours place so they morph together.

Jehan Osama Abdelgawad commented on 08 May 2012

Hi! I'm Jehan Osama. I'm born at 13/4/2002. I'm Egyptian. I have a conclusion. This is how we mix colors. Primary Colors can form the other rainbow colors. Thanks.

DieselFreak4101 commented on 09 Nov 2012

it happens because the colors on the wheel are primary colors and when mixed create other colors. so when it spins it tricks your eyes into seeing other colors.

Elise Renae commented on 02 May 2012

because the wheel is vibrating a bit and spinning really fast and the eyes can't see the lines and individual colored that are divided so that's how it works

EpicViking101 commented on 11 Dec 2012

The fps of your eyes is slower than the rotations of the disc. The colors merge because your mind is used to putting the pictures together the same way

MEG P. commented on 29 Jan 2014

your human eyes arent developed to see in very fast motion so they start seeing it mixed and i think it only works on primary colors

André Canilho commented on 23 Jan 2013

In Portugal since early 60's, kids used to do this with shirt's buttons, making it spin fast until it produces a strong sound.

Owenthemagician commented on 30 Aug 2012

Whenever I watch one of these ever if I don't have the items I feel like watching it anyways because it's so stinking sweet!

Sheree VloggsSpeciality commented on 11 May 2013

Guess this is Mr Higgensworth? :P can tell from the tee and hands. Steve I love your show, keep doing what you do! ^^

pinklovingirl commented on 22 Mar 2012

@MultiSpoilers It says your comment was posted 1 month ago.....its almost the end of march..................

Evelien2301 commented on 06 Jan 2013

Hey I can use that to do with the childeren when we work about colors!!! THANKS!!! Love it!!!

EasyAltitude commented on 22 Jun 2012

Darn you Mr. Spangler, and your amazing videos. I was supposed to be asleep 2 hours ago ;D

Star Mint commented on 10 Jul 2013

we did this in pioneer day in 5th grade ... but we used wood instead if cardboard. :D

Hey BBy commented on 30 Mar 2012

CURSES I HAD 3 HUGE ASSIGNMENTS DUE TOMMORROW BUT WASTED SO MUCH TIME LOL XDXDXDXD

Comba commented on 08 Nov 2012

I just realized that the red letters spelled science....... I feel like a noob

Caitlin Fritzsching commented on 01 Apr 2012

it happens by the force tht gos on an object has an opasit and a deopasit foce

CBG commented on 05 Apr 2012

make a colour wheel with a rainbow on it and it turns white when you spin it

monisha prasad commented on 16 Feb 2014

When the colours are going in a high speed the colours mixed together.

Mentos mixed with Diet Coke and Cherry Coke

When Ethan and science mix!

Hugo's Happy Dance

User Comments

oreotapatio commented on 30 May 2011

lol he gets so exicted

Dry Ice Crystal Bubble - Cool Science Experiment

Great Halloween Science It's the world's coolest crystal ball. Create a soap film on the rim of the bucket and you'll have what appears to be a crystal ball filled ...

User Comments

SpySappingMyKeyboard commented on 31 Aug 2012

I suspect it has to do with the leidenfrost effect. Basically when you have a relatively cold substance and you put it in a relatively hot medium (must be hot enough to "flash" the cool substance into gas), the cold substance (dry ice in this case) will create a barrier of gas in between the cool and hot substances which greatly reduces the rate of heat transfer. Another example is sticking your hand in water, then molten lead - the water flashes into steam protecting your hand for a short time.

EEVEEwolf1 commented on 16 Apr 2012

You actualy gave me an idea for my annual holloween party. I alway get together with friends and family and we have a little party. I am actually making the drinks this year (non alcoholic beverages and another which does have alcohol for the others I don't make thatone though. Cus mine is just a type of punch) I am goin to put a peice of dry ice in it (it contains a lot of carbonated sugar and water) so I get the smokey effect. I am also going to make the air cannon and the dry ice bubble

bufosp commented on 06 Jul 2012

CMIIW, but there's several reason for this. 1. the dry ice turns into gas so fast that it form some kind of bubble around it's body, therefor, the heat transfer from water to the ice isn't that fast. the bubble act as some kind of insulator. this is called Leidenfrost effect 2. the mass amount of dry ice isn't sufficient enough to nuke the water temperature down to reach 0 degrees. and you also have to consider the heat transfer from ambient (air temperature) to the water.

TheGleb123 commented on 22 Jul 2012

OMG! Guys, before you start talking about temperatures, you must know something about heat capacity of water and co2. Heat capacity of water (20C) = 6 * co2 (-98C). So if water losing 1 degrees, co2 getting 6 degrees. And because co2 start boil at -78C and becoming a gas, they flies up and stop freeze water. Temperature of co2 increases of -98C to -78C, so water temperature decreases of +20C to +17C only, obvious it's not enough.

Brenden Peterson commented on 12 Jan 2012

@60058366 The water is at a much higher temperature compared to the liquid nitrogen's, surpassing its boiling point. Therefore, the water is essentially 'heating' the liquid nitrogen into a gas a rapid rate. This gas also creates a barrier between the "solid" liquid nitrogen, and the water so there is no contact for the water to freeze.

cataclysmicnothing commented on 13 Apr 2012

I think its because when a warmer object (water) touches a cooler object (dry ice), the heat transfers and the dry ice sublimates back into a gas quicker than it can freeze the water. Also, the ice would still be warmer than the dry ice, so it'd still be transferring heat, turning the dry ice into more carbon dioxide. Just my thoughts.

Zelif commented on 24 Jun 2012

Don't know where people are getting liquid nitrogen, it is just dry ice and water. The dry ice given long enough will freeze the water around it. The reason it doesn't freeze fast is because of a similar effect when you put drops of water on a boiling plate it creates like a shield of gas, thus thermal conductivity is low.

Happyskateboarding commented on 15 Feb 2012

@60058366 The dry ice is quickly sublimed since its boiling point is very low. This vaporization forms a sort of "air shield" around the dry ice, and the water doesn't even have to touch the dry ice before it becomes a gas.

Vivi Song commented on 12 Jan 2012

@60058366 It goes straight from solid to gas so the water around it doesn't really have time to freeze because of all the gas is making. I may be wrong though but that's what I put on my HS science test!

40kchaoslord commented on 08 Mar 2012

@60058366 Because it sublimates too quickly. It turns instantly from a solid to a gas, though it is cooling the water by sucking heat from it, it's not allowing the water to actually solidify into ice.

Ender Reality commented on 21 Dec 2011

@60058366 because even though its below its about -321 or lower so its hot the particles charge up very fast so it makes the water bubble and it doesn't make it freeze i hope tis answers your question

Just20PercentCooler commented on 19 Mar 2012

@60058366 the dry ice is not a frozen waterish liquid. it's frozen Carbon dioxide and has such a low melting point, that the water is warm enough to simply melt (evaporate) the dry ice