It depends on what you mean be intellegent! The brain learns!

Click the link to add information to this solution:
THE BRAIN INTELLEGENT

Grey matter and a few integrated circuits!

Click the link to add information to this solution:
WHAT THE BRAIN MADE OF?

The ALL POWERFULL!!!

Click the link to add information to this solution:
WHO IS THE BRAIN

The ALL POWERFULL!!!

Click the link to add information to this solution:
WHAT'S THE BRAIN

The ALL POWERFULL!!!

Click the link to add information to this solution:
WHAT THE BRAIN?

Euclid is the father of geometry.

Click the link to add information to this solution:
THE FATHER OF GEOMETRY?

The nearest star is the sun.

Click the link to add information to this solution:
WHICH THE NEAREST STAR?

Nitrogen is the chemical element represented by the symbol N.

Click the link to add information to this solution:
N ON THE PERIODIC TABLE.

Influenza is the most frequent cause of death from a vaccine-preventable disease in the United States. From 1990 through 1999, an average of approximately 36,000 influenza-associated pulmonary and circulatory deaths occurred during each influenza season. In addition to fatalities, seasonal influenza is also responsible for more than 200,000 hospitalizations per year. Rates of infection from seasonal influenza are highest among children, but the risks for complications, hospitalizations, and deaths are higher among adults ages 65 and older, children younger than 5 years, and people of any age who have medical conditions that place them at increased risk for complications from influenza.

A novel H1N1 virus was first detected in March of 2009 and quickly spread to pandemic levels. In the U.S., it is estimated that approximately 43-89 million persons became ill with 2009 pandemic H1N1 from April 2009 to April 2010. The virus also resulted in significant hospitalizations and deaths among children, adults 19-65 years, obese persons, and pregnant and post-partum women.

Click the link to add information to this solution:
HOW SERIOUS THE FLU?

The BRAIN!!

Click the link to add information to this solution:
WHAT THE MEANING OF LIFE

Sunlight reaches Earth's atmosphere and is scattered in all directions by all the gases and particles in the air. Blue light is scattered in all directions by the tiny molecules of air in Earth's atmosphere. Blue is scattered more than other colors because it travels as shorter, smaller waves. This is why we see a blue sky most of the time.

Click the link to add information to this solution:
WHY IS THE SKY BLUE?

Influenza is the most frequent cause of death from a vaccine-preventable disease in the United States. From 1990 through 1999, an average of approximately 36,000 influenza-associated pulmonary and circulatory deaths occurred during each influenza season. In addition to fatalities, seasonal influenza is also responsible for more than 200,000 hospitalizations per year. Rates of infection from seasonal influenza are highest among children, but the risks for complications, hospitalizations, and deaths are higher among adults ages 65 and older, children younger than 5 years, and people of any age who have medical conditions that place them at increased risk for complications from influenza.

A novel H1N1 virus was first detected in March of 2009 and quickly spread to pandemic levels. In the U.S., it is estimated that approximately 43-89 million persons became ill with 2009 pandemic H1N1 from April 2009 to April 2010. The virus also resulted in significant hospitalizations and deaths among children, adults 19-65 years, obese persons, and pregnant and post-partum women.

Click the link to add information to this solution:
IS THE FLU SERIOUS?

Make sure you follow the tutorial here: http://www.buildyourcnc.com/CNCElectronicsandWiring.aspx

Click the link to add information to this solution:
THE MOTORS ARE NOT TURNING

Verkoyansk in Siberia

Click the link to add information to this solution:
THE COLDEST PLACE ON EARTH

Sahara desert

Click the link to add information to this solution:
THE BIGGEST DESERT IN WORLD

Cooling is not as tricky as you might think. There is 3 ways to approach this, only 2 really matter for a low scale 40w setup. First one is the cheapest and easiest. The higher the temp of water the worse your performance will be, from what I understand anything in the 30C range is about the most tolerable it gets. Lower is better. But not frozen...from what I've been told a very experienced cutter, he found 8C was the highest power he achieved.

1. Use a 5 Gallon resovoir system which gives you a fairly large space of water to heat up before you need to tend to it. Add about a cup of anti-freeze to the mix of DISTILLED water. You don't want ANY minerals in the water that might build up in your system. The anti-freeze works to keep algae and other ickies from growing in your water.

2. Use a smaller resovoir system (or even closed loop) and install 1 or more radiators found in CPU cooling systems with 120mm fans attached. This will continously cool your water system to ambient room temperatures, but with a tiny resovoir it will be difficult to add things like ice-packs to drop the temps if the ambient is quite hot.

3. Using an industrial coolant system. Overkill and unless your cutting A LOT, this is a very expensive option to take. You can also explore the idea of Peltier cooling but it is extremely expensive electricity/BTU wise compared to an industrial cooler.

Click the link to add information to this solution:
HOW CAN COOL THE LASER TUBE?

The average lifespan of a tube is 1000-1500 hours IF ran at a max of 16mA for most of it's life. It's life will go down if you run constantly at it's max rating.

CO2 laser tubes also have a shelf life. So make sure to only buy a replacement tube close to when you plan to install it, keeping it on a shelf for the future will only compromise it's life span.

To measure your amperage going through your system. You go from the negative line of the tube and run it THROUGH your multimeter/ammeter and back out to the laser PSU. This will give you your amp usage. It will not hurt your multimeter either. Just be sure your connections are very snug since 20,000V is liable to arc very easily if a connection comes loose.

Additional Information:
what is life span of CO2 generator in videojet laser coding machineVJ3320

Click the link to add information to this solution:
HOW LONG DOES THE TUBE LAST?

Amazon and the Nile are the longest rivers in the world.

Click the link to add information to this solution:
THE LONGEST RIVER IN WORLD IS

The spindle is quieter and has more consistent torque (It doesn't get "bogged down" when it starts cutting into material). It can be used with collets of varying sizes (not restricted to imperial sizes). It is water cooled and so it does not blow air downward to cool the spindle like the router does. The spindle is also machined with much higher precision than typical routers and will have a much longer life.

Click the link to add information to this solution:
WHY SHOULD I BUY THE SPINDLE?