Describe the appearance of the flame when the air vents are opened. When the air vents (collar) are opened, the air mixes with the gas and makes a more complete combustion reaction. This results in a hotter reaction, with a light blue colored flame. 6. What apparatus is used in this demo to test how hot the flame is?
One of the biggest disadvantages is not being able to make connections as easy as the copper. Fiber optic cables have a core as fine as a human hair, making it extremely difficult to splice. Copper cables are obviously not going to be around forever with the fiber optics being so futuristic, but they still have advantages over the fiber. Copper is very easy to work with. When making connections it is so much easier to splice the copper cable than it would be for the fiber.
One disadvantage to frontlighting is that there might be a shadow in the picture and makes the picture different from what the photographer wanted in the first place. 2. What advantages does strobe lighting have over continuous lighting? Advantages are that strobe lighting gives a lot of light without getting hot, while flash lighting stays the same. Strobe lighting can be controlled and adjusted.
Fiber In the comparison between fiber and copper fiber, costs of the fiber cable has come down quite a bit. The cable itself has become easier to install as well since the invention of the flexible fiber which makes it easier to pull the cable through places. The flexible fiber has not become widely used vs. copper yet due to the need for the costs to come down for the connections, the NIC’s. the hub’s, routers and switches. Fiber Advantages The following advantages of fiber over other cabling systems are: (Oliviero 250) Immunity to electromagnetic interference (EMI), higher data rates, longer maximum distances, and better security.
As a reverse DC voltage is applied across the diode, its capacitance varies. The higher the voltage, the less the capacitance. This is due to depletion layers of the diode junction, but we wont get into details here. This variable capacitor in conjunction with the stub, which is actually an inductor (coil) is the basis of our voltage controlled oscillator! As the voltage increases across D5, the frequency of oscillation increases.
Another example of innovation is disruptive innovation with the creation of the first electric light bulb. This invention explored a new technology by using a tiny metal filament enclosed within a glass envelope, and offered greater convenience and adaptability than previous forms of lighting. Carbon arc lighting evolved for public street lamps, an incremental innovation, utilizing proven technology from Davy's discovery, which helped spread the use of lighting. Another big step for lighting innovation was the patenting of incandescent filament light bulbs, by legitimizing and standardizing the
7. You want to build a circuit which causes a ligh tbulb to turn on when you throw a switch. So, you build the circuit if Figure 5. When the switch is connected to point A the capacitor charges, and when you connect the switch to point B the light goes on. Let the resistance of the light bulb be Rℓ = 1.50 ×103 Ω, the potential difference across the battery is VB = 10.0V , and the capacitor has a capacitance of C = 1.35 × 10−4 F
These stars also have a fraction of the brightness of the Sun or their companion yellow giant. The Sun is much brighter and hotter than these red dwarfs partly because all red dwarfs have a fraction of the fuel available than that of yellow giants like the Sun. AURIGA
Electronic Cigarettes Comm 101 April 27, 2013 The electronic cigarette is a smoking alternative that is relatively new to the United States market. Electronic cigarettes are largely regarded as a healthier alternative to traditionally manufactured cigarettes, which contain thousands of chemicals, many of which are poisonous. However, electronic cigarettes have had little testing done to determine the dangers that they have, the safety of the electronic cigarette as an alternative is unclear. * Electronic cigarettes, look like the real thing but have just one thing in common with cigarettes made from tobacco; nicotine. An electronic cigarette consists of a white cylindrical tube with a brown filter and a red, glowing tip.
Whereas electronic cigarettes cannot be considered safe, as there is no threshold for carcinogenesis, they are undoubtedly safer than tobacco cigarettes. If this product does not exist, it would not affect me because from my point of view technology would never beat nature. Tobacco cigarettes are the leading cause of disease in the United States,which is why the ‘primary goal of tobacco control is to reduce mortality and morbidity associated with tobacco use. Electronic cigarettes are designed to mitigate tobacco-related disease by reducing cigarette consumption and smoking rates. The evidence reviewed inthis article suggests that electronic cigarettesare a much safer alternative to tobacco cigarettes.