What is role of He in this laser?

What is role of He in this laser? Rami Arieli: “The Laser Adventure” The role of the Helium gas in He-Ne laser is to increase the efficiency of the lasing process. Two effects make Helium particularly valuable: The direct excitation of Neon gas is inefficient, but the direct excitation of He gas atoms is very […]

How do we map the sea floor today?

How do we map the sea floor today? Echo sounding is the key method scientists use to map the seafloor today. The technique, first used by German scientists in the early 20th century, uses sound waves bounced off the ocean bottom. Echo sounders aboard ships have components called transducers that both transmit and receive sound […]

What shade of clay is the purest form?

What shade of clay is the purest form? What is the purest form of clay? The purest clay is kaolin, or china clay. Called a primary clay because it is found very near its source, kaolin has few impurities and is the main ingredient used in making porcelain. What is clay rock? Clay is a […]

Does a brown recluse have 6 legs?

Does a brown recluse have 6 legs? Almost all spiders have eight eyes, but Brown recluse spiders only have six. These eyes are arranged in three pairs of two. Does Spider have 8 or 6 legs? Spiders are arachnids. They differ from insects in having only two parts to the body, eight legs not six, […]

Is 32 Celsius hot or cold?

Is 32 Celsius hot or cold? Hot:84-99 F (29-37.5 C) Warm:70-84 F (21-29 C) Cool:55-69 F (13-21 C) Cold: Below 55 F (Below 13 C) Why do babies sleep with their hands up? “Babies have different sleeping positions just like adults do. “The very simple answer is that they may sleep this way because it […]

How long is a 15000 ft skydive?

How long is a 15000 ft skydive? HOW LONG DOES A TANDEM SKYDIVE FREEFALL LAST? From 15,000ft you will freefall for up to 60 seconds. From 12,000ft you will freefall for up to 45 seconds. From 9,000ft you will freefall for up to 25 seconds. How long does it take to hit the ground skydiving? […]

What do reverse faults create?

What do reverse faults create? (A) Reverse faults display severe damage in the form of landslides over the fault trace caused by the inability of the hanging wall to support the overhang caused by the fault displacement, folds, and compression features within the fractured hanging wall, and compressional block tilting. What effects do these faults […]

Which type of star has the largest habitable zone?

Which type of star has the largest habitable zone? Stars that are larger, hotter and more massive than the Sun (A-dwarfs) have their habitable zone much farther out from the star. What is the main requirement for a habitable zone? The standard definition for a habitable planet is one that can sustain life for a […]

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