miscellaneous

How to create a terrarium (or vivarium or self-contained bottle garden)

Making a terrarium, a self-sustainable ecosystem with a living, growing plant inside a sealed bottle, is a pretty easy project and the plant growing inside can survive for decades without any watering or other care.  Here’s how you can build a terrarium on your own. How to make a terrarium, vivarium, or garden in a bottle First, find a suitable sealed glass bottle or jar. A bottle with a wide mouth will be much easier to work with. Make sure the bottle has a lid or cork which can be sealed tightly. Fill the bottom of the bottle with pebbles. You need at least enough pebbles to cover the bottom of the bottle but can add more if the bottle is taller. Try to fill…
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Light

Fooling Around with your Mind

Using mirrors to confuse your brain (and Dad) Our eyes see everything going on around us.  The eyes then send this information to our brain which then interprets the information they are given.  Sometimes the brain has to fudge a little when making these interpretations.  This is especially true when our eyes see something that the brain knows cannot be true.  In cases like this, the brain interprets the information the best it can and may end up feeling a little bit Have Dad leave the room.  Don't say we didn't warn you. Glue the two mirrors together, back to back.  Be very careful not to cut yourself on the mirrors.  If the edges of the mirrors are too sharp, you may want to apply…
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Cohesion

Super bouncing bubbles science experiment

Super bouncing bubbles Reeko loves bubbles - all kinds of bubbles. Reeko loves chomping a big glob of bubblegum and blowing bubbles the size of baseballs (and as a kid, used to giggle with glee as his mother struggled to cut the gum from his hair). Reeko loves making bubbles in the bathtub using the "natural" bubble-maker method (if you haven't mastered the natural bubble-maker method, eat beans, it helps). And of course, the science behind bubbles is quite amazing too. Bubbles that you find in liquids are simply air that is trapped inside the liquid. Soap bubbles work on the similar principle but with a bit more complexity. The surface area of a liquid, like water, has a certain "surface tension". Surface tension makes…
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