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physics

Purple Heart

Purple Heart is a physics topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Purple Heart rather than just read about it. In short: The Purple Heart is a United States military decoration awarded in the name of the president to those wounded or killed while serving on or after 5 April 1917, with the U.S. military. With its forerunner, the Badge of Military Merit, which took the form of a heart made of purple cloth, the Purple Heart is the oldest military award still given to U.S. military members.

Purple Heart — main illustration
Purple Heart — illustration

Key takeaways

  • Purple Heart belongs to physics; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Purple Heart to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Purple Heart from memory before moving on to harder problems.

Reference excerpt

The Purple Heart is a United States military decoration awarded in the name of the president to those wounded or killed while serving on or after 5 April 1917, with the U.S. military. With its forerunner, the Badge of Military Merit, which took the form of a heart made of purple cloth, the Purple Heart is the oldest military award still given to U.S. military members. The National Purple Heart Hall of Honor is located in New Windsor, New York.

History The original Purple Heart, designated as the Badge of Military Merit, was established by George Washington – then the commander-in-chief of the Continental Army – by order from his Newburgh, New York, headquarters on 7 August 1782. The Badge of Military Merit was only awarded to three Revolutionary War soldiers by Washington himself. Washington authorized his subordinate officers to issue Badges of Merit as appropriate. Although never abolished, the award of the badge was not proposed again officially until after World War I. On 10 October 1927, Army Chief of Staff General Charles Pelot Summerall directed that a draft bill be sent to Congress "to revive the Badge of Military Merit". The bill was withdrawn and action on the case ceased on 3 January 1928, but the office of the Adjutant General was instructed to file all materials collected for possible future use. A number of private interests sought to have the medal re-instituted in the Army; this included the board of directors of the Fort Ticonderoga Museum in Ticonderoga, New York. On 7 January 1931, Summerall's successor, General Douglas MacArthur, confidentially reopened work on a new design, involving the Washington Commission of Fine Arts. Elizabeth Will, an Army heraldic specialist in the Office of the Quartermaster General, was named to redesign the newly revived medal, which became known as the Purple Heart. Using general specifications provided to her, Will created the design sketch for the present medal of the Purple Heart. The new design, which exhibits a bust and profile of George Washington, was issued on the bicentennial of Washington's birth.

The Commission of Fine Arts solicited plaster models from three leading sculptors for the medal, selecting that of John R. Sinnock of the Philadelphia Mint in May 1931. By executive order of the president of the United States, the Purple Heart was revived on the 200th anniversary of George Washington's birth, out of respect to his memory and military achievements, by War Department General Order No. 3, dated 22 February 1932. The criteria were announced in a War Department circular dated 22 February 1932, and authorized award to soldiers, upon their request, who had been awarded the Meritorious Service Citation Certificate, Army Wound Ribbon, or were authorized to wear Wound Chevrons subsequent to 5 April 1917, the day before the United States entered World War I. The first Purple Heart was awarded to MacArthur. During the early period of American involvement in World War II (8 December 1941 – 22 September 1943), the Purple Heart was awarded both for wounds received in action against the enemy and for meritorious performance of duty. With the establishment of the Legion of Merit, by an Act of Congress, the practice of awarding the Purple Heart for meritorious service was discontinued. By Executive Order 9277, dated 3 December 1942, the decoration was applied to all services; the order required reasonable uniform application of the regulations for each of the Services. This executive order also authorized the award only for wounds received. For both military and civilian personnel during the World War II era, to meet eligibility for the Purple Heart, Army Regulation 600–45, dated 22 September 1943, and 3 May 1944, required identification of circumstances. After the award was re-authorized in 1932 some U.S. Army wounded from conflicts prior to the First World War applied for, and were awarded, the Purple Heart:

… excerpt ends here. Continue reading the full article.

Illustrations

Purple Heart illustration
Purple Heart illustration
Purple Heart: Sign on Interstate 35 designating the Purple Heart Trail.
Sign on Interstate 35 designating the Purple Heart Trail.
Purple Heart: Purple Heart Memorial, Westland, Michigan
Purple Heart Memorial, Westland, Michigan
Purple Heart: Admiral Mike Mullen reads the citations for seven soldiers receiving Purple Hearts for wounds sustained in Afghanistan
Admiral Mike Mullen reads the citations for seven soldiers receiving Purple Hearts for wounds sustained in Afghanistan

Worked examples

Example 1 — a first encounter with Purple Heart

Start with the simplest possible case. Write down what Purple Heart claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In physics, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Purple Heart before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Purple Heart ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Purple Heart

In research
Purple Heart appears in physics research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Purple Heart in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Purple Heart is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1932 establishments in the United States, Awards and decorations of the United States Air Force, Awards and decorations of the United States Army, so understanding it makes those chapters shorter.
In everyday life
Look for Purple Heart outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.
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How to study Purple Heart in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Purple Heart means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Purple Heart out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Purple Heart in simple terms?

The Purple Heart is a United States military decoration awarded in the name of the president to those wounded or killed while serving on or after 5 April 1917, with the U.S. military. With its forerunner, the Badge of Military Merit, which took the form of a heart made of purple cloth, the Purple H…

Why does Purple Heart matter?

Because it connects several physics ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Purple Heart?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Purple Heart.

Tags

  • 1932 establishments in the United States
  • Awards and decorations of the United States Air Force
  • Awards and decorations of the United States Army
  • Awards and decorations of the United States Coast Guard
  • Awards and decorations of the United States Marine Corps
  • Awards and decorations of the United States Navy
  • Awards and decorations of the United States Space Force
  • Awards established in 1932
  • Cultural depictions of George Washington
  • Military awards and decorations of the United States
  • Purple
  • Purple Heart

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