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

Balancing a mass on your finger Mass: Demonstrating how the distribution of the mass of an object determines the position of its center of gravity, its angular momentum, and your ability to balance it. Sunshine State Standards: SC.C.1.2 SC.C.2.2 SC.H.1.2 SC.H.2.2 Materials: 1/2 inch wooden dowel, approximately 3 feet long, Lump of plastic modeling clay To Know: Inertia – the tendency for a mass or object that is at rest to remain at rest or if it is in motion for it to continue in motion.. Think of pushing someone in a wagon or merry go round. It is hard … Continue reading balancing stick

Hot air and helium have lower density than cold air, so balloons filled with these are “lighter than air”. density – An object with a lot of matter in a certain amount of volume has high density. An object with a little matter in the same amount of volume has a low density. temperature has an effect on density. When the temperature of a substance increases, the density decreases because the atoms are moving all around the place having less mater in one space. Uses weather, scientific research transportation What’s the problem? Crazy Lawn Chair Balloon Flight! (video 4:01) – … Continue reading balloon