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From this point, you can see that reflector actually works by yellow color of reflection. It means, that looking along the optical axis of LED module, you seeing the reflection of its surface.
The Battle of Fredericksburg was fought December 11–15, 1862, in and around Fredericksburg, Virginia, between General Robert E. Lee's Confederate Army of Northern Virginia and the Union Army of the Potomac, commanded by Major General Ambrose Burnside. The Union Army's futile frontal attacks on December 13 against entrenched Confederate defenders on the heights behind the city is remembered as one of the most one-sided battles of the American Civil War, with Union casualties more than twice as heavy as those suffered by the Confederates.
Burnside's plan was to cross the Rappahannock River at Fredericksburg in mid-November and race to the Confederate capital of Richmond before Lee's army could stop him. Bureaucratic delays prevented Burnside from receiving the necessary pontoon bridges in time and Lee moved his army to block the crossings. When the Union army was finally able to build its bridges and cross under fire, urban combat in the city resulted on December 11–12. Union troops prepared to assault Confederate defensive positions south of the city and on a strongly fortified ridge just west of the city known as Marye's Heights.
On December 13, the "grand division" of Maj. Gen. William B. Franklin was able to pierce the first defensive line of Confederate Lieutenant General Stonewall Jackson to the south, but was finally repulsed. Burnside ordered the grand divisions of Maj. Gens. Edwin V. Sumner and Joseph Hooker to make multiple frontal assaults against Lt. Gen. James Longstreet's position on Marye's Heights, all of which were repulsed with heavy losses. On December 15, Burnside withdrew his army, ending another failed Union campaign in the Eastern Theater.
bout 600 yards to the west of Fredericksburg was the low ridge known as Marye's Heights, rising 40–50 feet above the plain. (Although popularly known as Marye's Heights, the ridge was composed of several hills separated by ravines, from north to south: Taylor's Hill, Stansbury Hill, Marye's Hill, and Willis Hill.) Near the crest of the portion of the ridge comprising Marye's Hill and Willis Hill, a narrow lane in a slight cut—the Telegraph Road, known after the battle as the Sunken Road—was protected by a 4-foot stone wall, enhanced in places with log breastworks and abatis, making it a perfect infantry defensive position. Confederate Maj. Gen. Lafayette McLaws initially had about 2,000 men on the front line of Marye's Heights and there were an additional 7,000 men in reserve on the crest and behind the ridge. Massed artillery provided almost uninterrupted coverage of the plain below. General Longstreet had been assured by his artillery commander, Lt. Col. Edward Porter Alexander, "General, we cover that ground now so well that we will comb it as with a fine-tooth comb. A chicken could not live on that field when we open on it."
Seven Union divisions were sent in, generally one brigade at a time, for a total of fourteen individual charges, all of which failed, costing them from 6,000 to 8,000 casualties. Confederate losses at Marye's Heights totaled around 1,200. The falling of darkness and the pleas of Burnside's subordinates were enough to put an end to the attacks. Longstreet later wrote, "The charges had been desperate and bloody, but utterly hopeless." Thousands of Union soldiers spent the cold December night on the fields leading to the heights, unable to move or assist the wounded because of Confederate fire. That night, Burnside attempted to blame his subordinates for the disastrous attacks, but they argued that it was entirely his fault and no one else's.
en.wikipedia.org/wiki/Battle_of_Fredericksburg
en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_...
Cruce de dos unidades de Metrolink,retirados hace un tiempo de servicio por unidades más modernas. Una excusa más para volver,otra excusa más para viajar. Entrando (o saliendo) a Picadilly square.
Fachada Frontal
Hora: 12:35
Data: 05-08-2010
Local: Estação de Abrantes (PK 134 - Linha da Beira Baixa)
I like the lines from the rotala rotundifolia mixing with the large rock, ending on the java fern, then exploding in colors from the macandra and the short Cryptocorine on the left.
Eurasian Coot
The Eurasian coot (Fulica atra), also known as the common coot, is a member of the rail and crake bird family, the Rallidae. The scientific name is from Latin; Fulica is "coot", and atra is "black". It is found in Europe, Asia, Australia and parts of Africa. The Australian subspecies is known as the Australian coot.
The coot breeds across much of the Old World on freshwater lakes and ponds. It occurs and breeds in Europe, Asia, Australia, and Africa. The species has recently expanded its range into New Zealand. It is resident in the milder parts of its range, but migrates further south and west from much of Asia in winter as the waters freeze.
The Eurasian coot is 32–42 cm (13–17 in) long and weighs 585–1,100 g (1.290–2.425 lb), and is largely black except for the white frontal shield (which gave rise to the phrase "as bald as a coot", in use as early as 1430). As a swimming species, the coot has partial webbing on its long strong toes.
The juvenile is paler than the adult, has a whitish breast, and lacks the facial shield; the adult black plumage develops when about 3–4 months old, but the white shield is only fully developed at about one year old.
This is a noisy bird with a wide repertoire of crackling, explosive, or trumpeting calls, often given at night.
The Eurasian coot is much less secretive than most of the rail family, and can be seen swimming on open water or walking across waterside grasslands. It is an aggressive species, and strongly territorial during the breeding season, and both parents are involved in territorial defence. During the non-breeding season they may form large flocks, possibly related to predator avoidance.
It is reluctant to fly and when taking off runs across the water surface with much splashing. It does the same, but without actually flying, when travelling a short distance at speed in territorial disputes. As with many rails, its weak flight does not inspire confidence, but on migration, usually at night, it can cover surprisingly large distances. It bobs its head as it swims, and makes short dives from a little jump.
This species builds a nest of dead reeds or grasses, but also pieces of paper or plastic near the water's edge or on underwater obstacles protruding from the water, laying up to 10 eggs, sometimes 2 or 3 times per season. Usually only a few young survive. They are frequent prey for birds such as herons and gulls.
The coot is an omnivore, and will take a variety of small live prey including the eggs of other water birds, as well as algae, vegetation, seeds and fruit. It shows considerable variation in its feeding techniques, grazing on land or in the water. In the water it may upend in the fashion of a mallard or dive in search of food.