Bernoulli Force

Bernoulli’s equation, which was named for Daniel Bernoulli, relates the pressure in a gas to the local velocity; so as the velocity changes around the object, the pressure changes as well. What’s the problem? Bernoulli’s equation is used on aircraft to provide a speedometer called a pitot-static tube. A pressure is quite easy to measure with a mechanical device. In a pitot-static tube, we measure the static and total pressure and can then use Bernoulli’s equation to compute the velocity. Ask – How fast is this airplane going? It is moving through the air at some speed. The air itself … Continue reading Bernoulli Force

Bell Boeing V-22 Osprey

Bell Boeing V-22 Osprey – multi-mission, military, tiltrotor aircraft with both a vertical takeoff and landing (VTOL), and short takeoff and landing (STOL) capability. It is designed to combine the functionality of a conventional helicopter with the long-range, high-speed cruise performance of a turboprop aircraft. The V-22 originated from the United States Department of Defense Joint-service Vertical take-off/landing Experimental (JVX) aircraft program started in 1981. The team of Bell Helicopter and Boeing Helicopters was awarded a development contract in 1983 for the tiltrotor aircraft. The V-22 first flew in 1989, and began flight testing and design alterations; the complexity and … Continue reading Bell Boeing V-22 Osprey

beauty products

Beauty products cleansing – soap smell – deodorant, perfume make-up – lipstick, mascara hair products – shampoo, conditioner, color, curl, straighten Cosmetics (including makeup or make-up) are care substances used to enhance the appearance or odor of the human body. They are generally mixtures of chemical compounds from natural or synthetic sources. U.S. Food and Drug Administration (FDA) regulates cosmetics intended to be applied to the human body for cleansing, beautifying, promoting attractiveness, or altering the appearance without affecting the body’s structure. That’s engineering reaction – an action in response to some influence, event etc.; a chemical transformation or change … Continue reading beauty products


Binoculars – (also known as field glasses) are two identical or mirror-symmetrical telescopes mounted side-by-side and aligned to point accurately in the same direction, allowing the viewer to use both eyes ( binocular vision) when viewing distant objects. Most are sized to be held using both hands, although there are much larger types. A binocular gives users a three-dimensional image: the two views, presented from slightly different viewpoints to each of the viewer’s eyes, produce a merged view with depth perception. Binocular telescopes, or binoculars, (also known as field glasses) are two identical or mirror-symmetrical telescopes mounted side-by-side and aligned … Continue reading binoculars


Batteries use an ongoing chemical reaction to generate a potential difference between two terminals. Battery – a device that can create electricity using a chemical reaction. It converts energy stored in molecules inside the battery into electricity. They produce direct current (DC) electricity (electricity that flows in one direction, and does not switch back and forth). A battery can provide electricity in areas that do not have electric power distribution. Invisible Engineering – Chemist Angela Belcher looks to manufacture high technology out of viruses using nanotechnology to grow batteries. Batteries that could last weeks or months and be thinner than … Continue reading battery


Balance (biomechanics) – an ability to maintain the line of gravity (vertical line from center of mass) of a body within the base of support with minimal postural sway. Sway is the horizontal movement of the center of gravity even when a person or object is standing still. Balancing machine – a measuring tool used for balancing rotating machine parts such as rotors for electric motors, fans, turbines, disc brakes, disc drives, propellers and pumps Your cell phone is able to vibrate because there’s a little motor inside that rotates a small, off-balance weight. Balancing boy equilibrium toy – demonstrates … Continue reading balance