What are the 4 structures of the Sun? In studying the structure of the Sun, solar physicists divide it into four domains: the interior, the surface atmospheres, the inner corona, and the outer corona. What are the parts of the…
What is a supplied air hood? Supplied Air Respirators deliver breathable air to the worker from a clean air source. The air can come from a variety of sources including high pressure compressors, low-pressure pumps or bottled air cylinders. What…
Is it seeded or seated in sports? A seed is a competitor or team in a sport or other tournament who is given a preliminary ranking for the purposes of the draw. Players/teams are “planted” into the bracket in a…
Does foam board go over house wrap? If you are installing “innie” windows, your housewrap should go under the foam. If you are installing “outie” windows, your housewrap should go over the foam. Should I put foam board behind my…
What can I add to bar soap to make it antibacterial? essential oils – Lemon, grapefruit and tea tree essential oil give the soap a refreshing smell and are said to have antibacterial and antiviral properties. How do you turn…
Why do we need a ULN2003 in driving a stepper motor? Known for its high current and high voltage capacity, the ULN2003 gives a higher current gain than a single transistor and enables the low voltage and low current output…
Where do photochemical reactions occur in plants? In grana or stroma lamellae have stacks of thylakoid where the photosynthetic pigments are located and this photochemical reaction takes place. What is photochemical in plants? Plant photochemistry is a highly regulated process,…
How do you use the portal gun in Portal? The Portal Gun is a Hardmode, post-Moon Lord tool which is always dropped by the Moon Lord. It launches projectiles capable of creating up to two portals (one fired by hitting…
How do I download a SID file? To download and view digital images in SID format: Download MrSID Viewer 2.0 from the Library of Congress (available above). Click on the “Download MrSID image” link at the bottom of the display…
What is the difference between magnetic and electronic ballast? Magnetic ballasts work at a frequency of around 60 Hz, whereas electronic ballasts work at an increased frequency of around 20,000 Hz. This is why fluorescent lamps using electronic ballasts do…