AddThis Feed Button Featured Rule of Thumb                 Surprise Me!
2460 Mechanics thumb thumb thumb thumb
ESTIMATING POWER TO DOUBLE SPEED
Doubling the speed requires four times the force and eight times the power.
R.A. Heindl, design engineer, Euclid, Ohio
Current Rating: 4.2 out of 10 based on 15 reviews
Comments (0) Mail It You must login to Rate.


This Column: New Rules Pending

Rate these new Rules IN or OUT of the Main Collection!

IN=5 out of 10 or higher based on first 10 reviews

5583 Science thumb thumb thumb thumb thumb thumb thumb thumb thumb thumb
MPH TO FEET/SECOND
60 Miles per Hour is 88 Feet per Second
Thomas Coyle, Business Analyst, Mechanicscburg, PA, USA
(1) Contributions from this contributor since (2013-07-09)
Current Rating: 10 out of 10 based on 1 reviews
Comments (0)  Mail It You must login to Rate.

5582 Electricity thumb thumb thumb thumb thumb thumb thumb
CHOOSING A PULL-UP RESISTOR
When selecting a pull-up resistor to prevent a floating state, the general rule is to use a pull-up resistor that is an order of magnitude (1/10th) less than the input impedance of the input pin. For example, if you use a 1MΩ resistor for the pull-up and the input pin’s impedance is on the order of 1MΩ, the voltage on the input pin is going to be around half of VCC, and the microcontroller might not register the pin being in a high state. Is it a high or a low? A resistance of 10k to 100kΩ for R1 should avoid most problems.
Joseph Bauer, Master Carpenter, Indian Hills, Ohio, USA
(41) Contributions from this contributor since (2008-01-08)
Current Rating: 7 out of 10 based on 2 reviews
Comments (1)  Mail It You must login to Rate.

5581 Body Rules thumb thumb thumb thumb thumb thumb thumb
FACIAL SYMMETRY IS INDICATIVE OF IQ
Males with more symmetric faces in old age have higher intelligence and are more efficient at information processing than males with less symmetric faces
Scott Parker
(160) Contributions from this contributor since (2008-01-30)
Current Rating: 6.6 out of 10 based on 3 reviews
Comments (1)  Mail It You must login to Rate.

5580 Driving thumb thumb thumb thumb
BEST/WORST DRIVERS IN THE UK
Computer engineers worst, farmers best drivers in UK
Scott Parker
(160) Contributions from this contributor since (2008-01-30)
Current Rating: 4.3 out of 10 based on 3 reviews
Comments (1)  Mail It You must login to Rate.

5579 Body Rules thumb thumb thumb thumb
SHAPE OF YOUR FOOT TELLS ANCESTRY
You can determine your lineage through the shape patterns of your feet and toes.
Scott Parker
(160) Contributions from this contributor since (2008-01-30)
Current Rating: 4 out of 10 based on 3 reviews
Comments (1)  Mail It You must login to Rate.

5578 Crime thumb
STAY AWAY FROM THOSE WHO SMOKE MARIJUANA
If you do not smoke marijuana, stay away from those who do. Sooner or later they will try to mix some substance into your food and trick you.
Andrius, Kaunas
(11) Contributions from this contributor since (2012-11-19)
Current Rating: 1.4 out of 10 based on 5 reviews
Comments (1)  Mail It You must login to Rate.

5577 Health thumb thumb thumb thumb thumb thumb thumb thumb
RECOVERY FROM SURGERY
For every one hour that you spend in surgery, it generally takes one month to recover and feel back to normal.
Pam, Researcher, Orlando, FL, USA
(1) Contributions from this contributor since (2015-01-30)
Current Rating: 8 out of 10 based on 2 reviews
Comments (0)  Mail It You must login to Rate.

5576 Travel thumb thumb thumb thumb thumb thumb
HOLDING YOUR WATER
Men can hold their water twice as long as women. Plan your stops accordingly when traveling by automobile.
Alan
(1) Contributions from this contributor since (2015-01-19)
Current Rating: 5.5 out of 10 based on 2 reviews
Comments (0)  Mail It You must login to Rate.



1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | Next >
Page 1 of 37