Monthly Archives: August 2012

Conversion Units Of Weight

Ever needed to know the conversion formula for weights?

English System

To convert

Multiply by

To obtain

grains

0.00229

oz

grains

0.0001429

lb

grains

0.0000000714

tons

oz

438

grains

oz

0.0625

lb

oz

0.00003125

tons

gal

8.3322

lb°

lb

0.12002

gal°

lb

7,000

grains

lb

16

oz

lb

0.0005

tons

tons

14,000,000

grains

tons

32,000

oz

tons

2,000

lb

lb/hr°

0.0020003

gpm

gpm

499.925

lb/hr°

Metric System

To convert

Multiply by

To obtain

grams

15.43

grains

grams

0.0353

oz

kg

35.27

oz

kg

2.2046

lb

kg

0.001102

US tons

tonnes

2,204.6

lb

tonnes

1.1023

US tons

grains

0.0648

grams

oz

28.350

grams

oz

0.02835

kg

lb

0.4536

kg

lb

0.000454

tonnes

US tons

907.2

kg

US tons

0.9072

tonnes

Weighing the right way

Weighing the right way

 

The link above is for a pdf booklet from Mettler Toledo.  It is a detailed guide to getting the best results from
your balance. What you should do and what you shouldn’t.

Definitely worth a
read!

Proper weighing with Laboratory
Balances….

Looking for conversion units of length?

The useful table below will help to convert those units of length queries….

 

Units of Length:

 

English System

 

To convert

Multiply by

To obtain

in.

0.0833

ft

in.

0.0278

yd

in.

0.0000158

miles

ft

0.333

yd.

ft

12

in.

ft

0.000189

miles

ft

0.000165

miles (naut.)

yd

36

in.

yd

3

ft

yd

0.000568

miles

miles

63,360

in.

miles

5,280

ft

miles

1,760

yd

miles (naut.)

6,076

ft

 

Metric System

 

To convert

Multiply by

To obtain

mm

0.03937

in.

cm

0.3937

in.

meters

39.37

in.

meters

3.281

ft

meters

1.0936

yd

km

3,281

ft

km

1,093.6

yd

km

0.6214

miles

microns

0.00003937

in.

in.

25.40

mm

in.

2.540

cm.

in.

0.0254

meters

ft

0.3048

meters

ft

0.0003048

km

yd

0.9144

meters

yd

0.0009144

km

miles

1.609

km

in.

25,400

microns

Mars Rover Curiosity

On 5th August NASA’s Mars Rover Curiosity will begin it’s descent to the red planets surface.  It will land in a way never attempted before.

 

The spacecraft has been designed to steer itself during descent through Mars’ atmosphere with a series of S-curve maneuvers similar to those used by astronauts piloting NASA space shuttles. During the three minutes before touchdown, the spacecraft slows its descent with a parachute, then uses retro rockets mounted around the rim of an upper stage. In the final seconds, the upper stage acts as a sky crane, lowering the upright rover on a tether to the surface.

Curiosity is about twice as long (about 3 meters or 10 feet) and five times as heavy as NASA’s twin Mars Exploration Rovers, Spirit and Opportunity, launched in 2003. It inherited many design elements from them, including six-wheel drive, a rocker-bogie suspension system and cameras mounted on a mast to help the mission’s team on Earth select exploration targets and driving routes. Unlike earlier rovers, Curiosity carries equipment to gather samples of rocks and soil, process them and distribute them to onboard test chambers inside analytical instruments.

Visit http://mars.jpl.nasa.gov/msl/mission/overview/ for more information.

Also for an excellent little video animation showing the landing visit :-

http://www.nasa.gov/mission_pages/msl/news/msl20110624.html

 

“Entry, descent and landing is referred to as the ‘seven minutes of terror’  because we’ve got literally seven minutes to get from the top of the atmosphere  to the surface of Mars, going from 13,000 miles an hour to zero in perfect  sequence, perfect choreography and perfect timing, and the computer has to do it  all by itself with no help from the ground,” said Adam Steltzner, a NASA  engineer, in a video interview. “If any one thing doesn’t work just right, it’s  game-over.”