What is the purpose of using charts and graphs? Graphs and charts are visuals that show relationships between data and are intended to display the data in a way that is easy to understand and remember. People often use graphs and charts to demonstrate trends, patterns and relationships between sets of data. What are the […]
Does water absorb sun energy?
Does water absorb sun energy? About 23 percent of incoming solar energy is absorbed in the atmosphere by water vapor, dust, and ozone, and 48 percent passes through the atmosphere and is absorbed by the surface. Thus, about 71 percent of the total incoming solar energy is absorbed by the Earth system. Why is the […]
Are blue eyes a mutation?
Are blue eyes a mutation? People with blue eyes have a single, common ancestor, according to new research. A team of scientists has tracked down a genetic mutation that leads to blue eyes. The mutation affected the so-called OCA2 gene, which is involved in the production of melanin, the pigment that gives color to our […]
What are inductors and capacitors used for?
What are inductors and capacitors used for? Capacitors and inductors are electronic components that can store energy supplied by a voltage source. A capacitor stores energy in an electric field; an inductor stores energy in a magnetic field. How are capacitors and inductors used together? Inductors that share the magnetic path are combined together and […]
Who discovered M82?
Who discovered M82? Johann Elert Bode How was M82 discovered? As a member of the M81 group, M82 is 12 million light years distant. M82 was discovered on December 31, 1774 by Johann Elert Bode together with M81; he described it as a “nebulous patch”, about 0.75 deg away from M81, which “is very pale […]
What is the distance a screw thread advances axially in one turn called?
What is the distance a screw thread advances axially in one turn called? Lead What are the different types of screw threads? Clamp screws come in many forms. There are Standard threads, ACME threads, Buttress threads, and Square threads. Each of these threads may be used in clamps and vises for different reasons. What are […]
What is rounded to the nearest inch?
Why do we need to protect ecosystems?
Why do we need to protect ecosystems? Healthy ecosystems clean our water, purify our air, maintain our soil, regulate the climate, recycle nutrients and provide us with food. They provide raw materials and resources for medicines and other purposes. They are at the foundation of all civilisation and sustain our economies. How can we protect […]
What temperature does quartz crack?
What temperature does quartz crack? Manufacturers market quartz as able to withstand temperatures up to 400 degrees Fahrenheit (one reason it works well as fireplace surrounds). But “thermal shock” can result from placing a hot pan straight from the oven or stovetop onto a cold quartz countertop, which can lead to cracking or discoloring. Can […]
Why does my dryer cause so much static?
Why does my dryer cause so much static? The tumbling action of the dryer causes fabrics to rub against each other and build up the electrostatic charges that zap and cling. You’ve probably noticed that static cling is much worse in the winter than summer months. Static electricity is formed more easily when the air […]