# Diamond floating

Normally anything which has a specific gravity (density) greater than water - and diamonds have a density of about 3 ( as someone else said) doesn’t float. BUT I used to get Boy Scouts to rub a needle gently over a candle, wipe it with their scarf(!!) and place it gently on a saucer of water, when they saw that although it was steel, it DID float. If they magnetised it first by stroking it with a magnet it became an El Cheepo compass. SO: you can do that with diamonds too - if you really want. But I insisted that they tell me WHY it floated!
Cheers

``````    /\
/ /    John Burgess
/ /
/ /__   johnb@ts.co.nz
/ / \ \
``````

/ (___)
(_________)

At 04:56 PM 11/7/96 +1200, you wrote:

Normally anything which has a specific gravity (density) greater than water

• and diamonds have a density of about 3 ( as someone else said) doesn’t
float. BUT I used to get Boy Scouts to rub a needle gently over a
candle, wipe it with their scarf(!!) and place it gently on a saucer of
water, when they saw that although it was steel, it DID float. If they
magnetised it first by stroking it with a magnet it became an El Cheepo
compass. SO: you can do that with diamonds too - if you really want.
But I insisted that they tell me WHY it floated!

Cheers

Surface tension? MTW

At 04:56 PM 11/7/96 +1200, you wrote:

Normally anything which has a specific gravity (density) greater than water

• and diamonds have a density of about 3 ( as someone else said) doesn’t
float. BUT I used to get Boy Scouts to rub a needle gently over a
candle, wipe it with their scarf(!!) and place it gently on a saucer of
water, when they saw that although it was steel, it DID float. If they
magnetised it first by stroking it with a magnet it became an El Cheepo
compass. SO: you can do that with diamonds too - if you really want.
But I insisted that they tell me WHY it floated!

Cheers

``````           /\
/ /    John Burgess
/ /
/ /__   johnb@ts.co.nz
/ / \ \
/ (___) \
(_________)
``````

orchid@ganoksin.com

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subjectank

The specific gravity of a diamond is 3.51 . I finally went and opened a
book. Dna

YEA, SURE… BUT BOY SCOUTS AND GIRL SCOUTS AND DO ANYTHING!!!
Jim

At 08:58 AM 11/7/96 -0800, you wrote:

At 04:56 PM 11/7/96 +1200, you wrote:

Normally anything which has a specific gravity (density) greater than water

• and diamonds have a density of about 3 ( as someone else said) doesn’t
float. BUT I used to get Boy Scouts to rub a needle gently over a
candle, wipe it with their scarf(!!) and place it gently on a saucer of
water, when they saw that although it was steel, it DID float. If they
magnetised it first by stroking it with a magnet it became an El Cheepo
compass. SO: you can do that with diamonds too - if you really want.
But I insisted that they tell me WHY it floated!

Cheers

``````           /\
/ /    John Burgess
/ /
/ /__   johnb@ts.co.nz
/ / \ \
/ (___) \
(_________)
``````

orchid@ganoksin.com

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