Every ellipse has two axes of symmetry. Each endpoint of the major axis is the vertex of the ellipse (plural: vertices), and each endpoint of the minor axis is a co-vertex of the ellipse. The center of an ellipse is the midpoint of both the major and minor axes. The axes are perpendicular at the center.

The line through the foci intersects the ellipse at two points, the vertices. The line segment joining the vertices is the major axis, and its midpoint is the center of the ellipse. The line perpendicular to the major axis at the center intersects the ellipse at two points called the co-vertices (0, ± b).

An ellipse equation, in conics form, is always “=1”. Note that, in both equations above, the h always stayed with the x and the k always stayed with the y.

Definition. An ellipse is a shape that looks like an oval or a flattened circle. An ellipse is the set of all points in a plane the sum of whose distance from two fixed points, called the foci, is a constant. A circle is a special type of ellipse where both focal points are at the same point, the center.

All circles are ellipses. 4. Fill in the Blank All three ellipses below are the same width. In which ellipse are the foci farthest apart?

A closed curve consisting of points whose distances from each of two fixed points (foci) all add up to the same value is an ellipse. The midpoint between the foci is the center. One property of an ellipse is that the reflection off its boundary of a line from one focus will pass through the other.

ellipsis

Many text messages read with more emotion when adding the ellipsis. Some people use them to indicate flirting, while others use them to show worry or sincerity. A phrase that changes drastically in meaning with the addition of an ellipsis is the simple phrase ‘hi’.

full stop period

The ellipsis …, . . ., or (in Unicode) …, also known informally as dot-dot-dot, is a series of (usually three) dots that indicates an intentional omission of a word, sentence, or whole section from a text without altering its original meaning.

Two dots is an informal and cute way of implying there is something else to say, except philosophically you don’t need to say it at that moment, so it’s more of a short-cut, and yes two dots is quicker that three since the latter means something else, formally any-way.

DOT is an acronym for damage over time, and it’s used in computer gaming to refer to acts that slowly cause damage to a character, such as poisoning or a spell.

: two points placed immediately after a musical note or rest to indicate augmentation of its time value by three-quarters.

Seven dots are believed to have been the divine symbol of Sibitti, and they are thought. always to have had an astral significance, although it is only in comparatively late texts. that they were identified with the Pleiades. The 7 dots were represented in art in very archaic.

∴

Also a message in Morse could be picked up by some radio-amateur. The DOT • is a signal of short duration = 1 SECOND. The DASH – equivalent to three dots = 3 SECONDS. The space ” “: between dots and dashes of a character are of 1 dot, between two letters should be 3 dots, between two words 6 or 7 dots.

Probably the most well known Morse Code Message is the one made up of three short pulses, then three long pulses, then three short pulses again. Or “dot dot dot, dash dash dash, dot dot dot.” This message means “S O S” (S = “…” and O is “—“), the distress signal.

Length of Morse code characters The space between elements which form the same letter is equal to one dot. The space between two letters is equal to three dots. The space between two words is equal to seven dots.

Morse Code and Phonetic Alphabet Page

Letter	Morse	NATO
V	***-	Victor
W	*–	Whiskey
X	-**-	X-ray
Y	-*–	Yankee

In the language of Morse code, the letter “S” is three short dots and the letter “O” is three longer dashes. Put them together and you have S.O.S. These sounds represent the international call for help because they are easy to recognize. Now, it is simply known as S.O.S.

Today, American Morse code is nearly extinct. A few amateur radio users and Civil War re-enactors still keep it alive. Pilots were required to know how to communicate using Morse code up until the 1990s. Today Morse code is primarily used among amateur radio users.

Several electric telegraphs were being developed in Europe, and in 1836 Samuel Morse and Alfred Vail developed their own prototype. Morse code is a system of sending messages by a series of on-off tones, lights or clicks. During WWI, electric telegraphs were used throughout the war, on both sides.

the narrow, muddy, treeless stretch of land, characterized by numerous shell holes, that separated German and Allied trenches during the First World War. Being in No Man’s Land was considered very dangerous since it offered little or no protection for soldiers.

During the First World War, letter writing was the main form of communication between soldiers and their loved ones, helping to ease the pain of separation. Receiving letters from family and friends was also vital to morale, keeping men and women connected to the homes they had left behind.

However, when the army was short of men, soldiers had to spend far longer periods at the front. It was not uncommon for soldiers to be in the front line trenches for over thirty days at a time.