Hummingbirds in Flight
Hummingbirds are fascinating birds that are always fun to watch. These birds are able to hover in mid-air, dart from side to side, go straight up or down, or even backwards. They can out-fly and out-maneuver birds hundreds of times their size. There are many factors that contribute to the hummingbirds’ ability to fly so easily through the air.
A hummingbird’s wings are shaped so that they are slightly rounded on the top. Bernoulli’s Principle explains why this helps the bird to fly. The air passing over the top of the wing must travel further than the air going under the wing. As the hummingbird moves forward, the velocity of the fluid increases over the wing and the pressure above the wing is reduced. The higher pressure under the hummingbird’s wing provides lift for the bird.
Hummingbirds have unusually strong muscles that enable them to raise and lower their wings with great power. As the Hummingbirds thrust their wings up and down, they fly into the air with amazing agility and speed. The sleek outline of the bird and smooth feathers create little drag as the bird darts through the air. Hummingbirds have even been seen flying upside down!
Another factor that helps explain how hummingbirds fly is called Archimedes Principle. The hummingbird stays in the air at a high altitude because it is held up by a buoyant force. The buoyant force is equal to the weight of the volume of fluid it displaces. The Venturi effect is evident when the hummingbird holds it’s wings close to it’s body.
Looking back on the jobs I’ve had they are often considered manly jobs in society which leads me into thinking about gender roles in our society. Gender roles are a set of behavioral norms assumed to accompany one’s status as a male or female (Conley 2017). Gender roles are very prevalent in determining one’s career. Gender roles are socially constructed so they are likely to be based off stereotypes. For example, a truck driving company may not hire a woman simply because women are stereotyped as bad drivers. In a study done by Lindsey Rice and Joan Barth they found that males were less likely to recommend the female applicant, particularly after stereotype-congruent priming. Meaning that simply a female applicant might be passed on just because of her gender. This then leads us into sexism. Sexism is when a person’s sex or gender is the basis for judgment or discrimination (Conley 2017). Both males and females are exposed to stereotyping in society that can lead to disadvantages in their
The author explores some stereotypes based on what types of jobs are more women’s type of jobs or more manly jobs. Careers such as carpenters and truck drivers are all almost exclusively male jobs, whereas careers in nursing or secretary work are all almost exclusively a woman’s type of work. Since the 1970’s, women have made head way into male dominated jobs. However, the author states that even though women have made it into male dominated jobs, this is not true for the reverse situation. The woman type jobs are still almost exclusively women’s jobs with men making little entry into them.
Most of the bones are pneumatic, meaning they are hollow and filled with air spaces connected to the respiratory system. Thus the hollow bones reduces the weight of birds which makes the lighter to fly freely.
Hummingbirds are enjoyable and amusing to watch because they have quick speeds, and they fly straight, stop fast, and fly upside down and backwards with precision. In the book North American Wildlife, Marshall Cavendish (2011) states, “A hummingbird’s wings are connected only at the shoulder joint and thus can move in all directions, allowing the bird to hover while feeding” (p.109). The flapping of their wings imitates the sound of bees, which is how they got their nickname of hummers. In the book Birds of Michigan, Ted Black and Gregory Kennedy (2003) state,” weighing as much as a nickel, a hummingbird is capable of briefly achieving speeds of up to 62 miles per hour” (p.180).
For nearly 3000 years, Chinese artisans have made kites. How do they fly? Air moveing quickly across the surface of a kite reduces the air pressure on the kite, making it light enough to float on the current. If the air stops moving, the air pressure increases and the kite falls to the ground. This is called the Bernoulli Principle. Kites are as challenging to make as they are to fly. This kite is sure to provide hours of fun.
Witkoski Stimpfel, Amy , Douglas M. Sloane, and Linda H. Aiken. "The Loger the shifts for hosital nurses, the higher the levels of burnout and patient disstisfaction." Health Affairs 31.11 (2012): 2501-2509. Proquest. Web. 11 Mar. 2014.
The wild turkey has between 5,000 and 6,000 feathers that cover almost the entire body of an adult turkey in patterns called feather tracts. These feathers provide a variety of survival functions for the wild turkey such as insulation, flight, and advertisement for reproduction. The amount of feathers and the different type of feathers allow it to stay dry and warm while also allowing it to fly. Unlike its domesticated counterpart, who is to large and heavy to fly, wild turkeys can fly up to 55 mph according to NWTF.org (3). Not only can they fly, but they hav...
Hummingbirds have evolved certain behavioural and physical traits which allows for them to be more energetically efficient, such as specialized storage and digestion adaptations, feeding and flying adaptations and breathing adaptation. Hummingbirds are extremely small and their muscles for flight are highly oxygen-dependent and require large amounts of energy. Hummingbirds are one of the smallest endotherms and any energetic output can be metabolically stressful. The hummingbirds’ small body size means that they have very little room for energy storage and therefore often endure energetic and metabolic stresses. They are the one of the oldest aves, dating back to some 33 million years ago and have evolved certain energy efficient adaptations that have allowed for them to live so long. These adaptations allow Hummingbirds to efficiently meet their energetic needs which in turn, allows for them to not only survive but also continue to evolve and expand their specific niches.
This effect is not really caused by a cushion of air at all, rather, by vortices of air off the tips of the wings.
: Much is said about how long shifts and nurse-to-patient ratio affect the nurse’s health, but little attention has been paid about the effects of sleep deprivation on the health and care of nursing professionals. Although it is important to understand the effects of long hours of work, researchers should also look attentively on the effects of insufficient sleep on the life of nurses.
It was human kind ultimate dream to defy gravity and to be able to fly freely in the skies like a bird. Because of that dream, as early as 400 BC, humans had been experimenting with the idea of flying when a Greek scholar built a wooden pigeon that flew through the air. many after him had tried to fulfill that dream but failed , some of them succeeded but failed to sustain the flight , some even succeeded in sustaining the flight but failed due to unforeseen circumstances as their flying machines failed to live up to its expectation . One of the prime example was the zeppelin which was also known as a dirigible airship , The first zeppelin was invented , designed and constructed by Count Ferdinand Adolph Heinrich Von Zeppelin during the early 20th century (“THE ZEPPELIN” , ND)
All flight is the result of forces acting upon the wings of an airplane that allow it to counteract gravity. Contrary to popular belief, the Bernoulli principle is not responsible for most of the lift generated by an airplanes wings. Rather, the lift is created by air being deflected off the wings and transferring an upward force to those wings.
The hovercraft has seen much non-government work as a hunting vehicle and even a flying machine. Hovercrafts have been able to fly because they have been adapted to weigh less than the force propelling them up and by streamlining the hull to be able to be aerodynamic. Because the force pushing on the ground was greater than the weight of the hovercraft, the hovercraft was able to create tons of lift force with the wings, which thus enabled it to bring its wings off the ground/water and fly into the horizon!
Notably, having higher proportions of nurses working shorter shifts—8–9 hours or 10–11 hours—resulted in decreases in patient dissatisfaction” (Stimpfel et al.). This is essentially saying that the longer the shift length, the more negative outcomes result. This study proves that eight to nine-hour shifts are more effective, and should, in turn, be worked more than longer shifts. This is a problem because hospitals are likely to continue to schedule nurses for twelve hours shifts out of
There are many factors to why a rubber band airplane flies like lift, gravity, thrust, stability, angle of attack, and air drag, but let me start at the beginning The Wright brothers were the first to produce a manned, heavier-than-air machine that left the ground by itself, moved forward, but didn't decrease speed, and landed on a higher point than where it started. Their airplane flew in 1903, but was only in the air for 12 seconds, as months went by they improved the flight time to 38 minutes. They never graduated high school, but developed the first flying airplane.