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Description
Absorbers For Radiation Study Set of 24 With HolderAbsorbers Set of 24 with Holder A comprehensive set of 24 absorbers spanning the full density spectrum from tissue paper and card through aluminium foils, sheets and plate, to lead foils and a 12mm lead block. Each absorber is stamped with its density in g cm. Packed in a stout card box with dividers, plus plastic support plates and a source absorber holder rack for horizontal plane experiments. Kit contents: 24 Absorber pieces, full density range 1
Absorbers Set of 24 with Holder
A comprehensive set of 24 absorbers spanning the full density spectrum — from tissue paper and card through aluminium foils, sheets and plate, to lead foils and a 12mm lead block. Each absorber is stamped with its density in g/cm². Packed in a stout card box with dividers, plus plastic support plates and a source/absorber holder rack for horizontal-plane experiments.
Kit contents:
- 24 Absorber pieces, full density range
- 1 Source & absorber holder rack
- ∞ Plastic support plates for castle use
- g/cm² - Density marked on every absorber
- PDF - Radioactive source info document
- BOX - Stout card box with dividers
- PDF - Instruction Sheet
Specifications
| SKU | SE.PA0030-001 |
| Kit size | 24 absorbers |
| Absorber format | 50 mm square pieces |
| Material range | Tissue paper → 12mm lead |
| Density marking | g/cm² marked on each absorber |
| Included accessories | Plastic support plates, source/absorber holder rack |
| Packaging | Stout card box with dividers |
| Documentation | Radioactive source PDF included |
| Brand | IEC |
Source specifications (Kit SE.PA0030-001 does not contain the following products)
| Source | SKU | Type | Half-life | Notes |
|---|---|---|---|---|
| Polonium 210 | SE.PA2667-005 | α Alpha | 135days | Order on request — not stocked |
| Strontium 90 | SE.PA2667-010 | β Beta | 28.8 years | Long-term classroom resource |
| Cobalt 60 | SE.PA2667-020 | γ Gamma | 5.27 years | Practical multi-year usable life |
⚠ Polonium 210 — shelf life notice
Due to its 138.4-day half-life, the Polonium 210 source (SE.PA2667-005) is typically unusable for experiments approximately 18 months after manufacture. We do not carry stock of this item, and it is ordered only on request with short lead times. The previously used Americium 235 is now banned from classroom use.
Safety & compliance
☢ Radioactive sources — handling requirements
- Radioactive sources must be handled and stored under applicable radiation safety regulations
- For use by trained and licenced educators and laboratory technicians only
- Sources are not included in the absorber kit and must be purchased separately
- Appropriate radiation monitoring equipment should be available during all experiments
- Comply with all institutional and jurisdictional safety protocols
*Kit contains a holder for absorbers and for radioactive sources behind the absorber.
About the Absorbers Set / 24
The Absorbers Set / 24 (SE.PA0030-001) provides everything needed to conduct systematic radiation absorption experiments in a school or university physics laboratory. The kit spans the complete practical density range for classroom experiments, from lightweight tissue paper through to a 12mm-thick lead plate — allowing students to observe how absorber density and thickness affect radiation transmission for alpha, beta, and gamma sources.
Every one of the 24 absorber pieces is 50mm square and clearly marked with its density in g/cm², enabling precise, quantitative data collection. The graduated range of materials lets students construct absorption curves, determine half-value layers, and compare the penetrating power of different radiation types in a single, well-organised kit.
Key experimental applications:
- Determining the half-value layer (HVL) for alpha, beta, and gamma radiation using different absorber materials
- Comparing the relative penetrating ability of α, β, and γ radiation through a density-graduated absorber series
- Constructing absorption curves by plotting count rate against absorber density
- Demonstrating the effectiveness of lead as a gamma shielding material
- Qualitative and quantitative classroom demonstrations of radiation absorption principles
- Investigation of the relationship between absorber atomic number/density and radiation attenuation
The included source/absorber holder rack (SE.PA0031-001) positions both the radioactive source and the selected absorber in the horizontal plane, ensuring repeatable geometric alignment across all readings. Plastic support plates are included for use when operating with a castle configuration.
Radioactive sources (Alpha/Polonium 210, Beta/Strontium 90, Gamma/Cobalt 60) are available as separate variants and must be handled, stored, and used in accordance with all applicable radiation safety regulations. A PDF document covering radioactive source information is included with the kit.
α Alpha source
Polonium 210 t½ = 138.4 days- SKU: SE.PA2667-005
Low-energy Alpha source for classroom radioactivity and absorption studies. Replacement for the now-banned Americium 235. Short half-life — approximately 18 months after purchase, the source is no longer suitable for experiments. Not stocked; ordered on request.
β Beta source
Strontium 90 t½ = 28.8 years - SKU: SE.PA2667-010
Low-energy Beta source suitable for classroom radioactivity and absorption experiments. Long half-life makes this a reliable, long-term classroom resource.
γ Gamma source
Cobalt 60 t½ = 5.27 years - SKU: SE.PA2667-020
Low-energy Gamma source suitable for classroom radioactivity and absorption experiments. Multi-year usable life makes it practical for school laboratory use.
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4.2 ★★★★★
Based on 399 reviews
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Product Reviews
★★★★★ 4
Enchanting
Format: Kindle
"Queen of Roses" by Briar Boleyn is a delightful and refreshing reimagining of the classic tale of King Arthur, with a captivating twist that places the spotlight on Morgan, a character who has often been overshadowed in traditional retellings. Boleyn's creative decision to shift the narrative perspective to Morgan breathes new life into the story, offering readers an intriguing and compelling look at the Arthurian world from an entirely different angle.
One of the most commendable aspects of this book is its incorporation of Fae elements, which adds an enchanting layer of magic and mystery to the already familiar Arthurian setting. Boleyn skillfully weaves the world of the Fae into the narrative, creating a captivating backdrop against which the events of the story unfold. This addition not only adds depth to the world-building but also provides ample opportunities for twists and turns that keep readers thoroughly engrossed.
However, while the book boasts numerous strengths, it does have one noticeable flaw: the characterization of Morgan. While it is reasonable to create a flawed and complex protagonist, it appears that at times, Morgan's character becomes overly difficult and hard to relate to. Her persistently negative perception of one of the main male characters, who is a potential love interest, despite his efforts to support and assist her, may come across as somewhat irrational and could test the patience of some readers. Striking a balance between a strong, independent character and one who can recognize genuine support and affection could have enhanced the overall reader experience.
Nonetheless, the allure of "Queen of Roses" lies in its innovative approach to the Arthurian legend and its skillful blending of fantasy elements into a familiar narrative. Boleyn's evocative prose draws readers into a world where magic, destiny, and fate entwine, leaving us eager to uncover the mysteries that unfold within the pages.
I received a free copy of this book via Booksprout and am voluntarily leaving a review.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 28, 2023
★★★★★ 5
An action-packed dark romantasy
Format: Kindle
I loved this book! Queen of Roses is an Arthurian-inspired dark romantasy that is the first book in the Blood of Fae series. The story follows Morgan, the princess of Camelot who is rumored to be part fae. Fueled by prejudiced hatred and a mistrust of fae blood, Morgan’s abusive father strips her of her birthright and hands it to her half-brother, Arthur. Instead of becoming queen, Morgan is commanded to join the temple of the goddesses when she comes of age.
However, Arthur turns into a psychopathic, power-hungry, fae-hating king as he ages. He develops malevolent plans and commands Morgan to find an ancient weapon with legendary power. Although Morgan is wary of Arthur’s intentions, she embraces the opportunity to go on a journey and potentially change her fate.
The story picks up from there and we follow Morgan on her quest to find the ancient relic. It’s full of high stakes adventure, mystery, tension, banter, forced proximity, hidden magic, self discovery, and betrayal. This first installment of the series intricately develops the world building and character development. There’s little romance in this book, but it is evident that it is a slow burn that will continue to develop throughout the remainder of the series.
Overall, I loved the world building, the epic fantasy, Morgan’s journey of self discovery, and all of the twists and turns that set the stage for the future installments. I can’t wait to see what happens next!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 7, 2024
★★★★★ 4
Arthurian Fae Quest…say less.
Format: Kindle
A fae centered Arthurian tale unlike any I’ve read so far. The author did a great job at descriptive world building, with scenes easily playing out in my minds eye. There was plenty of action, suspense, and even a touch of horror. An enemies to lovers, slow burn romance, a quest, with plot twist and turns aplenty. There was a love triangle, which I’m not usually a fan of but, it played out well in this story line. The FMC, Morgan Pendragon, was so blatantly naïve, yet I typically expect as much in a ‘book one’ of a series, especially one that features a fairly sheltered princess. I was happy to read that in spite of this, she still showed a strong sense of morals, fire, and spine. Now our MMC? Kairos Draven, aka Void’s Edge. Oh, how I’m a sucker for a smoking’ hot grumpy warrior alpha with a witty mouth, and a strong sense of “touch her and die” attitude, so you know who held all my cards. That ending? Just made me swoon all the harder. Now add a battlecat that rivals the size of a horse…and well Ms. Briar Boleyn you have well and truly stolen my heart. I’m excited to see where the story goes from here, and follow along to see more of the characters growth. I went into this story fairly blind, and I think I enjoyed it all the more because of it.
Once the story got going, it had me in an absolute chokehold and it was difficult to put down.
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Reviewed in the United States on May 12, 2024
★★★★★ 3
Not a bad start
Format: Kindle
3 stars
Thank you Netgalley and Briar Boleyn for the ARC!
A camelot/king Arthur retelling with fae. I was hooked by the idea of this book immediately and was eager to jump into this world.
• slow burn
• enemies to lovers
• who did this to you
Morgan Pendragon watched her mother die by her father's hand when she was just eight years old, hiding under the bed. Morgan is believed to have the tainted blood of the fae in her veins and is cast aside so that her fathers illegitimate son, Arthur, can become the king. She's seen his cruel treatment of the fae firsthand, so when he sends her on a journey to find a fae weapon she seizes the opportunity to do more with her life. Along the way, she finds more than she could have imagined.
I don't know a whole lot about King Arthur and Camelot but I had a lot of fun with this story! The plot has some similar tropes to popular romantasy books (From blood and ash) but there's enough originality here that it doesn't feel like I'm reading a copy. I liked how the fae were different in appearance than what is typical in most fantasy books I've read. In this book they have blue hair, violet skin and a wide range of other characteristics. I thought that the world building was easy to follow and I could easily immerse myself into this world. After reading the blurb I kept wondering when she was going to go on the journey to find Excalibur and it doesn't happen until around the 45% mark.
The story is a bit slow at times but starts to pick up once they begin their journey to find Excalibur. The John Wick style Inn was a fun concept that I enjoyed reading about.
There are a lot of similarities to this and FBAA and I would have liked to have it be a little more different, but I'm hoping book two will have the story turn into something of its own. Overall I enjoyed reading this story and I'm looking forward to reading book two especially after that ending.
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Reviewed in the United States on May 27, 2023
★★★★★ 5
Fallen Angels, fae, vampires, oh my!
Format: Kindle
Rating: 4.5 | Spice: 2 (but a good slow-burn)
•
Main Characters: Huntyr and Wolf
•
I couldn’t wait to read this book; there was so much hype about it! And there was no doubt why. I fell in love with the characters and the plot itself. This book is mainly plot driven more than friction driven but it’s easy to follow along with. The characters are fun, easily understood. The main setting is at an academy where both the main characters are going through trials and building strength for the final test, The Transcendent. There are fantastic side characters as well. I loved the camaraderie between Huntyr and her friends. But we don’t like Lanson. 😆
We do have some plot twists that come into play throughout the book. Secrets and betrayal to be seen. I did adore Wolf and Huntyr’s relationship. It was a classic slow burn trope. They didn’t hit it off fast, but in time their feelings grew. I loved their banter, so sexy. Wolf is your next book boyfriend; Huntyr is your next vampire assassin independent bad-a*s female. Themes include loyalty, trust, self-discovery, a true slow burn romance. Side note: book ends on a angsty cliffhanger!
•
Emily, thank you for writing this awesome novel and I cannot wait to devour Book 2, Blood So Brutal! 😍
•
Happy reading, my lovelies! xo
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 21, 2024
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