Cobb Island (Maryland)

Cobb Island is a small island located at the confluence of the Potomac and Wicomico rivers in southern Charles County, Maryland, United States.[2] It is located approximately 45 miles (72 km) south of Washington, and is considered to be within the Washington, D.C. MSA. Cobb Island is separated from the mainland by Neale Sound and connected to it by a 0.11-mile-long (180 m)[3] fixed bridge carrying Maryland Route 254.

Cobb Island, Maryland
Census-designated place
Location of Cobb Island, Charles County, Maryland
Coordinates: 38°15′30″N 76°50′38″W
CountryUnited States
StateMaryland
CountyCharles
Area
 • Total0.9 sq mi (2.4 km2)
 • Land0.6 sq mi (1.6 km2)
 • Water0.3 sq mi (0.8 km2)
Elevation10 ft (3 m)
Population
 (2010)
 • Total1,166
 • Density1,300/sq mi (490/km2)
Time zoneUTC-5 (Eastern (EST))
 • Summer (DST)UTC-4 (EDT)
ZIP code
20625
GNIS feature ID1988529[1]

The unincorporated community and census-designated place (CDP) of Cobb Island is located on the island. As of the 2010 census, the CDP had a population of 1,166.[4] The community has a small post office, a volunteer fire department and rescue squad,[5] a Baptist church, a large community green space (Fisherman's Field) and a small playground for children. Commercially, there are two seafood restaurants with marinas (Captain John's Crab House, and Shymansky's Restaurant & Marina), The Rivah, a marina with a pizzeria restaurant chain (Ledo Pizza), a small bar and grill (The Scuttlebutt), a seasonal coffee shop, art gallery and bakery (The Cove at Cobb Island), and a small market (Cobb Island Market).

The Neale Sound, Wicomico River, and Potomac River join at Cobb Island

Historical notes

On December 23, 1900, Reginald Aubrey Fessenden sent and received the first intelligible speech by electromagnetic waves on a pair of masts 50 feet (15 m) high and 1 mile (1.6 km) apart on Cobb Island.[6] Fessenden was using a spark transmitter with the Kintner-Brashear interrupter.[7]

gollark: Basically, if I want to run a search it just goes `SELECT * FROM page_tokens WHERE token = 'one token in search query'` or something like that, and it now has a list of pages with the right token, and SQLite can execute this query relatively fast.
gollark: I mean, as far as I can tell there isn't really a faster *and* more storage-efficient way to do search than the inverted-index page_tokens thing.
gollark: ```sqlCREATE TABLE crawl_queue ( id INTEGER PRIMARY KEY, url TEXT NOT NULL UNIQUE, lockTime INTEGER, added INTEGER NOT NULL, referrer TEXT);CREATE TABLE pages ( id INTEGER PRIMARY KEY, url TEXT NOT NULL UNIQUE, rawContent BLOB NOT NULL, rawFormat TEXT NOT NULL, textContent TEXT NOT NULL, updated INTEGER NOT NULL);CREATE TABLE page_tokens ( id INTEGER PRIMARY KEY, page INTEGER NOT NULL REFERENCES pages(id), token TEXT NOT NULL, weight REAL NOT NULL);CREATE TABLE links ( id INTEGER PRIMARY KEY, toURL TEXT NOT NULL, fromURL TEXT NOT NULL, lastSeen INTEGER NOT NULL, UNIQUE (toURL, fromURL))```Here is the database.
gollark: To be fair, the text content field isn't that necessary, as for search it uses the page_tokens table anyway and it can be rebuilt from the HTML if I need it.
gollark: The frequency of every word *must* be stored for quick (O(log n) time or something) search, the raw HTML or at least might be needed if I come up with a better way to weight frequency or something, the links are useful for (future) better search ranking algorithms.

References
  1. "US Board on Geographic Names". United States Geological Survey. 2007-10-25. Retrieved 2008-01-31.
  2. U.S. Geological Survey Geographic Names Information System: Cobb Island (Maryland)
  3. "Highway Location Reference: Charles County" (PDF). Maryland State Highway Administration. 2010. Retrieved 2011-10-03.
  4. "Profile of General Population and Housing Characteristics: 2010 Demographic Profile Data (DP-1): Cobb Island CDP, Maryland". United States Census Bureau. Retrieved August 3, 2012.
  5. "Cobb Island Volunteer Fire Department & EMS - Charles County, Company 6". Retrieved 3 October 2011.
  6. Belrose, John S. (September 1994). "Fessenden and the Early History of Radio Science". The Radioscientist. 5 (3). Retrieved 3 October 2011.
  7. On the Birth of Wireless Telephony, John S. Belrose
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