באתר זה נעשה שימוש בקבצי עוגיות בין היתר של צדדים שלישיים. חלקן חיוניות לחוויית גלישה תקינה וחלק משמשות לסטטיסטיקה ושיווק. המשך גלישה באתר מהווה הסכמה לשימוש זה. המידע נשמר בהתאם למדיניות הפרטיות של מכון דוידסון.
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Displaying 12 Articles

Black-Marker Chromatography

A simple and visually impressive experiment reveals what a black marker’s color is really made of

calendar 21.3.2020
reading-time 5 minutes

Relight my Fire

Here’s a way to remotely light a candle that has just gone out, using the smoke rising from the wick.

calendar 21.3.2020
reading-time 3 minutes

Build Your Own Love Meter

The liquid rises as we think about someone we love

calendar 21.3.2020
reading-time 4 minutes

A Star of Toothpicks

Making self-forming stars using toothpicks – and what’s the connection to the Pharaohs?

calendar 21.3.2020
reading-time 3 minutes

How to Make Exploding Bags of Water

With materials found in any house, you can turn a regular bag into a “bomb” with a time-release mechanism

calendar 21.3.2020
reading-time 5 minutes

Making Butter from Cream

Butter shortage in the stores? Here’s how to make it at home

calendar 21.3.2020
reading-time 3 minutes

The Plumbers’ Secret Code

Write a secret message that only you can read, using just some magic tape

calendar 21.3.2020
reading-time 4 minutes

The Hard Boiled Dreidel

A festive experiment for Hanukkah, Passover, or anytime hard boiled eggs are on the menu

calendar 20.3.2020
reading-time 4 minutes

How Can We Make a Pine Cone Open and Close?

In this experiment, we’ll make a pine cone open and close as we wish. Equipment Pine cone

calendar 13.10.2014
reading-time 3 minutes

Preparing an Automatic Water Pump Out of Folding Straws

In this experiment, we’ll build a self-propagating water pump that sucks out water

calendar 14.6.2014
reading-time 3 minutes

Separating a Mixture of Salt and Pepper

In this experiment, we will accomplish the seemingly impossible feat of separating salt

calendar 7.6.2014
reading-time 3 minutes

Color-Changing Cabbage

In this experiment, we'll learn how to extract colorings from a red (purple) cabbage

calendar 3.5.2014
reading-time 2 minutes