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Rainbow Rocks 10th Anniversary - Let's celebrate the 10th anniversary of Rainbow Rocks with an art event! Here
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Cool Crow - "Caw!" An awesome tagger
Magnificent Metadata Maniac - #1 Assistant
The Power of Love - Made a piece of artwork loved by 1000 users
An Artist Who Rocks - 100+ images under their artist tag
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The End wasn't The End - Found a new home after the great exodus of 2012
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2231059 artist:joycall6
590 part of a set
25661 princess celestia
115425 princess luna
119926 series:joycall6's periodic table
135 g4
2093444 blushing
287321 cute
274459 cutelestia
4383 duo
192155 duo female
38335 duo focus
2761 ethereal mane
14389 female
1868436 glow in the dark
158 glowing
21286 glowing horn
30352 horn
222243 light
2402 lunabetes
4530 magic
99797 mare
782103 open mouth
250431 periodic table
241 pink-mane celestia
3210 royal sisters
7240 siblings
24177 sisters
19580 terbium
5 weapons-grade cute
4823
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Parcly Taxel
Parcly Taxel - For supporting the site
Silly Pony - Celebrated the 13th anniversary of MLP:FIM, and 40 years of MLP!
Flower Trio - Helped others get their OC into the 2023 Derpibooru Collab.
Roseluck - Had their OC in the 2023 Derpibooru Collab.
Tree of Harmony - Drew someone's OC for the 2022 Community Collab
Elements of Harmony - Had an OC in the 2022 Community Collab
Philomena - For helping others attend the 2021 community collab
Twinkling Balloon - Took part in the 2021 community collab.
Ten years of changes - Celebrated the 10th anniversary of MLP:FiM!
Happy Derpy! - For Patreon supporters
Bronze Supporter - Bronze Supporter
Friendship, Art, and Magic (2020) - Took part in the 2020 Community Collab
The Magic of Friendship Grows - For helping others attend the 2020 Community Collab
Chaotic Little Trees - 1000+ images under their artist tag
Perfect Pony Plot Provider - Uploader of 10+ images with 350 upvotes or more (Questionable/Explicit)
Toola Roola - For helping others attend the 2019 Community Collab
Friendship, Art, and Magic (2019) - Celebrated Derpibooru's seventh year anniversary with friends
Friendship, Art, and Magic (2018) - Celebrated Derpibooru's six year anniversary with friends.
Helpful Owl - Drew someone's OC for the 2018 Community Collab
A Really Hyper Artist - 500+ images under their artist tag
Friendship, Art, and Magic (2017) - Celebrated Derpibooru's five year anniversary with friends.
The Power of Love - Given to a publicly verified artist with an image under their artist’s tag that has reached 1000 upvotes
A Really Classy Artist - 250+ images under their artist tag
An Artist Who Rocks - 100+ images under their artist tag
A Perfectly Normal Pony - But my memory is a gaping vagina
Artist -

Princess of Science
Terfenol-D is a terbium/iron/dysprosium (more on that last component later) alloy responding to magnetic fields by stretching and shrinking. In particular, the later lanthanides are renowned for their magnetic properties and therefore what they give to more conventional magnets, either added strength or retaining power (vis-à-vis their fields). The very late ones reaching into 5d serve as generic refractory metals though.
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