Today's Featured Artist: Michael Godard

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Neutron Greeting Card featuring the photograph Artwork Of Proton-proton Chain Reaction by Science Photo Library

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Artwork Of Proton-proton Chain Reaction Greeting Card




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Image Size



Our greeting cards are 5" x 7" in size and are produced on digital offset printers using 100 lb. paper stock. Each card is coated with a UV protectant on the outside surface which produces a semi-gloss finish. The inside of each card has a matte white finish and can be customized with your own message up to 500 characters in length. Each card comes with a white envelope for mailing or gift giving.

Ships Within

1 - 2 business days

Ships From

Charlotte, NC

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Back View

Inside Message

Type a message, above, and you'll see what it looks like on the inside of the card, below.

Inside View

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Artist's Description

The proton-proton chain is an important nuclear reaction which occurs inside the core of main-sequence stars such as the Sun. It involves the conversion of hydrogen nuclei (protons, or 1H) into helium nuclei (4He) via several steps. First, two protons come together and stick. One of them is converted into a neutron, and debris is emitted in the form of a positron and a neutrino. The result is deuterium - a nucleus consisting of one proton and one neutron. With the addition of another proton and the subsequent emission of a gamma-ray, a new product is formed - an isotope of helium called helium-3 or tralphium. Finally, two of these helium-3 nuclei collide, and two protons are ejected, to make hydrogen. On average, a typical proton can wait up to a billion years in the nucleus of a star before it collides with another to initiate this whole process.

About Science Photo Library

Science Photo Library

Science Photo Library was founded in 1981 by Michael Marten, one of the authors of "Worlds Within Worlds", a book exploring different ways to observe the universe - from electron micrographs, to images of earthrise taken from the Apollo spacecraft. When Marten started receiving requests for the beautiful images in the book, he had an idea of setting up Science Photo Library. Since then, Science Photo Library has continued to work alongside world acclaimed photographers and the leading science and medical experts to provide a central source of the best science and specialist imagery available. Although the collection started with scientific images, it has grown to encompass all aspects of science and their impact on everyday life.

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Our return policy is very simple:


If you're not happy with a purchase that you made on, for any reason, you can return it to us within 30 days of the order date.   As soon as it arrives, we'll issue a full refund for the entire purchase price.   Please note - Fine Art America does not reimburse the outgoing or return shipping charges unless the return is due to a defect in quality.


Fine Art America sells thousands of pieces of artwork each month - all with a 100% money-back guarantee.   We take great pride in the fact that hundreds of thousands of artists have chosen Fine Art America to fulfill their orders, and we look forward to helping you select your next piece!

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All greeting cards ship from our production facility within 1 - 2 business days of your order.