To tell whether a solution is acidic or basic, scientists use a quantity called pH. It's going to change color depending on the pH of the solution we're dealing with. OK, that's phenolphthalein chemicals that we added in first, the one milliliter. Kevin, using the eye dropper and the sodium hydroxide, continue to drop-wise add in that base until we see a color change. Should see it start to change a little bit. Now, Cameron is going to add in the 90 millimeters of water. Now, Eugene, using the glass stirrer next to you, just slowly, gently start to stir that. We're going to mix about one millimeter of phenolphthalein with 10 milliliters of ethanol. We have regular water, we have ethyl alcohol, or ethanol, we have an acid-based indicator called phenolphthalein, and we have a strong base, sodium hydroxide. Now, what we have in front of us is our four ingredients. Alright, so what we're going to do next is we're going to make disappearing ink. MICHAEL FERGUSON: In the case of disappearing ink, the explanation is actually pretty simple.
One of the rules of chemistry is to demystify the unknown, so let's apply a little chemistry to reveal the mysteries behind these magic tricks. NARRATOR: Disappearing ink, trick birthday candles that relight after extinguishing, pushing an egg through the mouth of a bottle without breaking it- these tricks seem to defy the laws of nature, but they're not magic.
Scientific magic trick how to#
COVID-19 Portal While this global health crisis continues to evolve, it can be useful to look to past pandemics to better understand how to respond today.Student Portal Britannica is the ultimate student resource for key school subjects like history, government, literature, and more.Britannica Explains In these videos, Britannica explains a variety of topics and answers frequently asked questions.Demystified Videos In Demystified, Britannica has all the answers to your burning questions.This Time in History In these videos, find out what happened this month (or any month!) in history.#WTFact Videos In #WTFact Britannica shares some of the most bizarre facts we can find.Britannica Classics Check out these retro videos from Encyclopedia Britannica’s archives.But that didn't stop some people from seeing an object anyway researchers found that when participants were asked to describe the video afterward, 32 percent reported seeing him make an object disappear. He pantomimed the act of making an object disappear, but his hands were actually empty the whole time. Here's the catch: In one of the videos, the researcher didn't perform any tricks at all. Some videos showed everyday tricks - wearing a poker chip as a monocle, or eating a crayon - but in others, the researcher carried out a more traditional magic trick.
Scientific magic trick series#
According to the Washington Post, researchers from Oxford University showed more than 400 participants a series of videos depicting one of the researchers, who happened to be a semiprofessional musician, performing different actions. Needless to say, magic is a fascinating subject for psychologists, and a study recently published in the journal Frontiers of Psychology uncovered something fascinating about why magic seems so, well, magical. For a brief moment, they can make you believe that they really did saw a woman in half or make the entire Statue of Liberty disappear. It helps if you're willing to be swayed, of course, but magicians are masters of the art of manipulation.
We might theoretically understand that it's all sleight of hand, but magicians - or at least the good ones - fool us into seeing the impossible despite our best efforts. Many of us spend our childhoods wondering how magic tricks work, and as adults, it doesn't get much clearer.
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