the lock tumblers is way cool; i'd not ever visualized that.
...........
* sand * alcohol or lighter fluid * sugar * baking soda
1. Mix 4 parts powdered sugar with 1 part baking soda. 2. Make a mound with the sand. Push a depression into the middle of the sand. 3. Pour the alcohol or other fuel into the sand to wet it. 4. Pour the sugar and baking soda mixture into the depression. 5. Ignite the mound, using a lighter or match.
If you take three ordinary gears and put them together so that each gear meshes with the other two, then none of the gears can turn because neighbouring gears must turn in opposite directions. Triple gear avoids this problem by having the three "gears" arranged like linked rings - the gears then rotate along skew axes, and the opposite direction rule no longer applies
Comments
yeah, it can be argued that they ALL teach you stuff
how a key works
the lock tumblers is way cool; i'd not ever visualized that.
...........
* sand
* alcohol or lighter fluid
* sugar
* baking soda
1. Mix 4 parts powdered sugar with 1 part baking soda.
2. Make a mound with the sand. Push a depression into the middle of the sand.
3. Pour the alcohol or other fuel into the sand to wet it.
4. Pour the sugar and baking soda mixture into the depression.
5. Ignite the mound, using a lighter or match.
edit: Nightvision by Taiyo Yamamoto
Lost the source but someone Japanese I thunk.
so am going to try the flaming octopus mick posted!
Round 1
Round 2
Round 3