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Lighthouses
A lighthouse is a structure used to house a light source that acts as an aid to navigation for those at sea. It can also use a sound source for warning. They are also used to warn of dangerous coastlines, reefs, and other hazards, while indicating safe entries to harbors. Most remaining lighthouses are automatic rather than being manned. Questions should relate directly to all aspects regarding lighthouses, including their use and history.
699 Questions
Lighthouses are beacons, but not all beacons are lighthouses. "Some definitions are not controversial. An aid to navigation is a structure placed on or near navigable water to provide visual guidance to mariners.
A beacon is an aid to navigation that is fixed in place (that is, not floating). A lighted beacon or light beacon is a beacon displaying a light, while an unlit beacon is called a day beacon.
Often, a lighted beacon is simply called a light." Not all day beacons are lighthouses, because beacons can be unlit. Lighthouses can be decommissioned, but if they were never lit, they were never real lighthouses.
Singapore has a small number of lighthouses, historical or still in use.
One's at the top of Fort Canning Park, and is currently a minor tourist attraction.
Another's actually ... at the top of a residential block. An oddity even for locals.
What is the lighthouse lens cut of stones And what type of setting is used?
You may be thinking of a Fresnel Lens. This is a lens of large diameter, but which is made to be compact size and weight by consisting of a series of concentric circular prisms. This still behaves as a large diameter lens, but with much reduced mass.
Why do ships need to keep away from dangerous rocks by the lighthouse?
because water isn't deep enough for them.
Light houses are there to warn shipping of hazardous areas - Rocks, rocky shoreline and sand banks are classedas an invisible hazard. Rocks can ground a ship but are much more likely to hole the hull and sink the vessel.
What is the oldest operating winery in the US?
Brotherhood Winery is America's oldest winery, established in 1839 by the founder of Washingtonville, NY, where it is still located (a few hours from lower Manhattan).
How do you read moody's diagram?
To determine the frictional factor, find the relative roughness value for the pipe on the right. Then locate the pipes Reynolds number on the bottom. Follow the relative roughness curve to where it crosses the determined Reynolds number. Now at that point project a straight line to the left, the number determined on the left is the frictional factor.
Where is the United States Lighthouse Society in Hansville Washington located?
The address of the United States Lighthouse Society is: 9005 Point No Point Rd NE, Hansville, WA 98340-8759
What materials do you need to build a fence on a farm?
Wood and lead wire. Spade to dig hole for concrete or wooden posts, a rammer to make them firm. Steel posts can be driven in with a sledge hammer. Steel wire is then strung along the posts after being tied off at one end. It is stretched or "strained up" tight, then attached to the post using staples and hammer on wooden posts; or threaded through or tied on to concrete or steel posts.
Dont use lead wire, it is too soft, and toxic to stockHow do you get Alexandria's genesis?
By being a fictional character in a mary-sue story. According to the story, genetics.
How much money does it take to build a windmill?
It depends on the size of the windmill and its power output. A ten-kilowatt windmill costs about $40,000 (minus government rebates etc...in california, you can pay as little as $20,000 after rebates). Such a windmill will pay off itself in electricity generated in less than 15 years (faster if you can get paid for feeding electricity back to the grid), and last for at least 25-30 years.
How do they make a lighthouse flash?
Typically, the light in a modern lighthouse is a focused beam being mechanically rotated to sweep (turn) in a full circle. The "flash" is seen when it is pointing directly at you.
Smaller lights on buoys are actually flashing on and off with switches, to be more visible. Both continuous and flashing buoys are used to designate channels and shoals.
What are the outer banks lighthouses?
Currituck Beach in Corolla
Bodie Island in Nags Head
Cape Hatteras in Buxton
Ocracoke on Ocracoke Island
Cape Lookout near Emerald Isle
Roanoke Marshes Replica on Roanoke Island
Where is the New Friends Of The Fenwick Island Lighthouse in Selbyville Delaware located?
The address of the New Friends Of The Fenwick Island Lighthouse is: Po Box 1001, Selbyville, DE 19975-1001
