New CO2 figures may give geoengineering a boost - Short Sharp …
Infrared detectors on NASA’s Aqua satellite revealed that large populations of phytoplankton - microscopic organisms that absorb carbon dioxide and are the base of the food chain in marine ecosystems - are emitting high levels of …  read more…

Home Smoke Detectors,Fire Smoke Detectors,Optical Smoke Detector …
Main Feature: * MCU processing adopted * Auto-reset or reset by power off * Alarm output NC/NO optional * Infrared photoelectric sensor * Network output / LED indicator * Stainless steel shield for anti-EMI * SMT adopted * Strong …  read more…

Smoke Alarm,Photoelectric Smoke Detector,Fire Smoke Detectors(HM …
Main Feature: * ASIC control * Manual test, auto-reset * Low power indication * Infrared photoelectric sensor * Sound & flash alarm * Thin structure design * Strong adaptability to circumstance * SMT adopted * Dustproof, mothproof and …  read more…

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You’ve got game! All you need to know about the Nintendo Wii
Released in four key gaming markets in 2006, the Wii from Nintendo has become one of the most popular home video game consoles in the world. It was developed by Nintendo to appeal to a broader market….  read more…

Wireless Home Alarms
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Overview of Security Services and Products
Today security has become a real issue as home owners, businesses, property managers and architects look for proven, reliable and yet affordable safety and security products and services

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Resolved Question: Please help with these problems?
1. How long does it atke the light from the sun to reach the Earth, if the sun is 93,000,000 miles from the Earth? (1 mile=1600m)

2. When you look at a star or planet, you are looking back in time. How far back in time are you looking when you observe Pluto through a telescope from a distance of 5.91×10^12m

How about when you look at Proxima Centauri, our nearest star, which is 4.07×10^16m away?

3. If you traveled at the speed of light, how many years would it take you to get to a star system that was 9.46×10^17m away?

How about if you drove your car to the star system at a speed of 60 mph (30m/s)

4. IRAS, the Infrared Astronomy Satellite, had a detector that was supercooled to enable it to measure infrared or heat radiation from different regions in space. What is the frequency of infrared light that has a wave length of 1.04×10^-6

—————————–

Please help, I have no idea how to do this

  read more…

Resolved Question: Physics Problems…please help?
1. How long does it atke the light from the sun to reach the Earth, if the sun is 93,000,000 miles from the Earth? (1 mile=1600m)

2. When you look at a star or planet, you are looking back in time. How far back in time are you looking when you observe Pluto through a telescope from a distance of 5.91×10^12m

How about when you look at Proxima Centauri, our nearest star, which is 4.07×10^16m away?

3. If you traveled at the speed of light, how many years would it take you to get to a star system that was 9.46×10^17m away?

How about if you drove your car to the star system at a speed of 60 mph (30m/s)

4. IRAS, the Infrared Astronomy Satellite, had a detector that was supercooled to enable it to measure infrared or heat radiation from different regions in space. What is the frequency of infrared light that has a wave length of 1.04×10^-6

—————————–

Please help, I have no idea how to do this

  read more…

Voting Question: I’m looking for a method of detecting parts.?
These parts are traveling through a 50′ infrared oven. The air the beam goes through is about 1000 deg F. We use lasers on shorter ovens but as the length of the oven increases the heat affects the beam and makes it too unstable to detect. Any kind of optics at this distance doesn’t work. I was hoping to find some type of RF detector (I’m not sure if the heat will affect it or not) that is about the size of the laser equipment. Any ideas would be helpful.
Thanks

  read more…

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