Early Wednesday morning I was disappointed to find, relaxing on the white rug in our living room, a big cockroach.
Short on time, I dropped a pyrex bowl on top of him, slid some paper under and walked him outside. I had to get to work, but I wanted to examine him later to figure out just how many exterminators we should call.
Tragically, he died.
The spot where I left him must have been struck by direct sunlight and he was baked.
When I returned from work, water had condensed on the inside of the bowl. A lot of water.
I cut a little square of paper towel and set it on a scale. With the dry paper towel on the scale, I zeroed it out.
Next I wiped out the inside of the bowl. Hopefully the paper towel now held most of the water from the cockroach.
The white paper on the ground had also absorbed some moisture, but I didn't bother to weigh that.
The paper towel had gained 0.6 grams.
I reset the scale and weighed the remaining husk.
It was only 0.2 grams!
I was amazed. I know that humans are 80% water, but I had always considered insects to be hard inside and out, like little machines.
I had never considered that regular insects had that much water inside...and I definitely didn't realize you could distill them.
Epilogue: We don't have cockroaches in our house. This was a rogue American cockroach. They typically are born outside and must have been brought inside.
There are some concerns (voiced on Reddit) that the roach wasn't in a closed system, and that the water could have come from the air in the bowl or the cement below. Hopefully an additional test will verify or discount these concerns.
Scott Leased an Electric Ford Focus |
Testing the Effectiveness of a Beer Cozy |
Which is More Fragile, Eggshells or Taco Shells? |
How Ice Rinks are Made |
Shaken vs. Stirred |
Real Appliance Energy Use Tests |
How Much Does it Cost to Light Christmas Lights? |
Which Type of Cup Keeps Cold Drinks Coldest? |
Comparing LED light bulbs with Regular Bulbs and CFLs |
What is actually the coldest drink in town? |
Using Salt and Ice Water to Cool Down Beer |
Coors Light Cold Activation Temperature Indicator Decoder |
The Fastest Way to Cool Down Beer |
Hairdryer vs. Bowl of Water |
How Long Does it Take to Use the Bathroom During a Movie? |
Video Projector on a Disco Ball |
where is the coolest place to store things in your car? |
The weight of popcorn |
Does the Sunchips bag really decompose in a compost pile? |
Disscating a cockroach |
Sensefly Drone Airplane Camera |
That Entrance is Locked |
How to Stop Rubbernecking |
Eyeclops Night Vision |
Miracle Fruit Taste Test |
Hot Air Bubbles |
Helium Bubbles |
Neighborhood Speed Trap |
Pizza Race |
Eyeclops - Bionic Magnifier |
Breathalyzer Testing |
Fishing Line Fiberoptics |
The Value of Compact Fluorescent Bulbs |
Barry Marshall Fan Page |
Bottling the Keg Leftovers |
Spinning Rim Centrifuge |
Backwash Experiments |
testing sidewalk chalk in Minnesota |
Red Hot Vioxx Action! |
Balloon Delivery |
Making a Candle Out of Lipstick |
The lift of a Helium Balloon |
Lard Candle |
The Properties of Heat Transfer |
Insulation Testing |
Eating Out |
Eating In |
Tattoo Removal |
Drying Laundry |
Viscosity Testing |
Magazine Advertising |
Collecting Data |
Dropping Toast |
Refilling an Ink Cartridge |
Light Bulbs |
| Cash4Gold | work from home overload |
science club | pranks |
How much is inside? |
Incredible Stuff I Made | Car Rollover | Traffic Court
June 25, 2010 .