topic Re: Lighthouses of the world in Our Front Porch

Lighthouses of the world

DaveMcK — Wed, 11 Jun 2025 21:45:21 GMT

There are over 20,000 functioning ligIhthouses around the world. I have seen about 75 of them over the years.

Many of them on the Pacific coast and the Great Lakes

Sorry it took so long to set up this next topic!

Re: Lighthouse of the world

DaveMcK — Tue, 10 Jun 2025 17:50:45 GMT

New Presque Isle Lighthouse. Presque Isle, Michigan, Lake Huron.

Re: Lighthouse of the world

DaveMcK — Tue, 10 Jun 2025 18:02:49 GMT

❤ Lion's (Faux) Lighthouse For Sight, Long Beach, California 2013

The Lion's Lighthouse for Sight was dedicated on December 2000. The 65 foot metal tower is a symbol of the Lion's fundraiser activities for the visually impaired. Owned by the U. S. Coastguard. The harbormaster's office is at the base of the tower. 2000. Active (privately maintained and unofficial); focal plane 105 ft (32 m); continuous white light. 65 ft (20 m) steel tower with harbor master's office in the base. Lighthouse painted white, gallery black, lantern red. 40% of the funding for the lighthouse was raised by the Long Beach Downtown Lions Club, and the lighthouse is known as the Lions Lighthouse for Sight. The lighthouse was dedicated on 10 December 2000. It's called the Rainbow Lighthouse because it is floodlit at night in varying colors. Located just to the east of the Aquarium of the Pacific on the north side of the entrance to Long Beach harbor and the west side of the small boat basin.

Re: Lighthouse of the world

DaveMcK — Tue, 10 Jun 2025 19:35:41 GMT

Portsmouth Harbor Lighthouse during sunrise in New Castle, New Hampshire, USA.

Re: Lighthouse of the world

DaveMcK — Wed, 11 Jun 2025 21:35:29 GMT

Sunny morning at the beautifully restored Eagle Harbor Lighthouse Museum, MI on Lake Superior - Photo by GLLKA member Bruce Bowers

Re: Lighthouses of the world

DaveMcK — Thu, 12 Jun 2025 00:27:45 GMT

Large Lake Superior waves crash into the shoreline in front of Split Rock Lighthouse in Two Harbors, MN on 5/20/25. This day brought 50+mph winds and 9’+ waves to Minnesota’s north shore and the results did not disappoint!

Re: Lighthouses of the world

DaveMcK — Thu, 12 Jun 2025 13:50:05 GMT

The lighthouse at Grande-Anse, New Brunswick, Canada.

Re: Lighthouses of the world

DaveMcK — Fri, 13 Jun 2025 01:32:13 GMT

South East Lighthouse , Block Island , Rhode Island

Re: Lighthouses of the world

DaveMcK — Fri, 13 Jun 2025 13:38:41 GMT

Yaquina Head Lighthouse
Oregon, USA. Was able to visit this area a few years ago.

Re: Lighthouses of the world

DaveMcK — Fri, 13 Jun 2025 13:56:20 GMT

Pointe aux Barques Lighthouse and Maritime Museum. Huron County, Michigan.

The current structure, built in 1857, is one of the oldest active

lighthouses in the state.

In 1849, Catherine Shook was appointed Michigan’s first female lighthouse keeper for this lighthouse.

Re: Lighthouses of the world

DaveMcK — Fri, 13 Jun 2025 15:22:20 GMT

Moonrise at Nubble Lighthouse

Re: Lighthouses of the world

DaveMcK — Sat, 14 Jun 2025 01:30:58 GMT

A.L.🗼🗼Donaghadee Lighthouse is a lighthouse in Donaghadee County Down, Northern Ireland. Donaghadee is probably best known for its lighthouse and harbour. There has been a haven for ships at Donaghadee (locally known colloquially as the 'Dee') for centuries, and there has also existed a harbour since at least the 17th century.
Constructed 1836

Re: Lighthouses of the world

DaveMcK — Sat, 14 Jun 2025 14:15:34 GMT

Pigeon Point Lighthouse, West Coast, California, USA.

Re: Lighthouses of the world

DaveMcK — Sat, 14 Jun 2025 15:09:30 GMT

Point Abino Lighthouse , Lake Erie

Re: Lighthouses of the world

DaveMcK — Sun, 15 Jun 2025 00:14:39 GMT

Florence Oregon, Lighthouse! Heceta Head Lighthouse is a working 19th-century lighthouse is now home to a B&B with 6 rooms offering scenic views.

We were able to walk the beach next to this lighthouse some years ago.

Re: Lighthouses of the world

DaveMcK — Sun, 15 Jun 2025 11:21:35 GMT

Beautiful Cana Island Lighthouse.

I was able to climb this Door County, Wisconsin lighthouse a few years ago.

Re: Lighthouses of the world

DaveMcK — Sun, 15 Jun 2025 11:46:06 GMT

Esopus Meadows Lighthouse during sunset in Port Ewen, New York, USA.

Re: Lighthouses of the world

DaveMcK — Sun, 15 Jun 2025 16:06:44 GMT

The Chicago Harbor Lighthouse was built in 1893 for the World's Columbian Exposition. It resides near the mouth of Chicago River in Illinois, US 🇺🇸

Re: Lighthouses of the world

DaveMcK — Mon, 16 Jun 2025 12:08:09 GMT

Eagle Harbor Lighthouse in Michigan.

Re: Lighthouses of the world

DaveMcK — Mon, 16 Jun 2025 13:37:29 GMT

The Fresnel Lens:

The heart of a lighthouse!

In the 1700 and 1800’s open water shipping was the lifeline of commerce – it was the only way to transport goods between the continents, but it wasn’t easy. Among the many difficulties was the problem of ships, and all of their precious cargo running aground and being smashed on unseen rocks.

This necessity brought about the creation and design of many lighthouses on the coastlines, which would let ocean navigators see when they were getting too close to dangerous outcrops. The issue was, the lights were essentially a large candle or oil lamp, and many times they were so dim that when the boat Captain saw the light, it was already too late. So scientists of the day searched for ways to focus and project the light much further.

French physicist and engineer Augustin-Jean Fresnel developed the multi-part Fresnel lens for use in lighthouses. His design allowed for the construction of lenses of large aperture and short focal length, without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. A Fresnel lens can also capture more oblique light from a light source, thus allowing the light from a lighthouse equipped with one, to be visible over greater distances.