Lights, Diffraction, ACTION!

The light from the sun is what gives life to everything on this planet, yet it is not as simple as it seems. Light is a FUNdamental source of energy that beguiles and attracts students like moths to a flame. Light behaves in so many different ways: transmission, absorption, reflection, refraction, diffraction, scattering, polarization and interference. All these variations make a simple source of light a very complex physics concept for any student to absorb. At the Science Mill, we focus on making these “invisible” scientific concepts visible to all learners - young and old alike.

-Amber Middlebrook, Director of Education Partnerships


Lights, diffraction, action! Our new Light Loom exhibit challenges us to take action and play with light and colors in a whole new way.

Light Loom

Our new Light Loom exhibit challenges us to take action and play with light and colors in a whole new way.


When the Science Mill wanted to commission a new exhibit to occupy one of the former grain mill’s six iconic silos, the museum faced some challenges. “Our silos are a coveted space,” says Bradley Gray, the Science Mill’s Director of Museum Experience. “We didn’t quite know how to capitalize on the height and use the space to its fullest extent” Founder & Board Chair, Bonnie Baskin reached out to Brooklyn-based interaction design company Patten Studio, where Art Director and trained lighting designer Hortense Duthilleux proposed an artwork that turned out to be the perfect fit for the silo.

Light Loom is an interactive kinetic sculpture that teaches children about the properties of additive color.

A rope is anchored to the ceiling of a renovated grain silo. A motor at the base churns the rope, forming a physical wave. Red, green, and blue LEDs illuminate the sculpture from below, combining to bathe Light Loom in white light. As the rope passes through the light, a “persistence of vision” optical illusion splits the white light up into its constitutive colored beams. The primary colors of light: red, green, and blue—but also the secondary colors: cyan, yellow, and magenta—separate out from one another in bands.

“We thought that this would be a really cool way to teach kids about the concept of additive color,” shares Hortense Duthilleux, Patten Studio’s Art Director. “Kids learn about subtractive color at a very young age. This is the color wheel you are taught in art class, which teaches you about what happens with color when it is being reflected and absorbed by something physical. Additive color refers to how different wavelengths of pure light behave when they are not being reflected or absorbed by anything. It’s the exact opposite!”

“The utilization of the silo for this exhibit is phenomenal,” Gray shares. “From top to bottom you have color change at a level that I don’t think most folks have really seen before. Watching the light be separated by value is quite the experience, and to see that happen in real time . . . is truly a beautiful blend of art and science.”

Light Loom is engaged through a touch-free console. By interacting with the different colored optical sensors on the console, visitors dim either red, green, or blue light, forming different additive color combinations. Through play, visitors discover that red and green form yellow, red and blue form magenta, blue and green form cyan, and white light is produced when all three primary colors coincide.

“What is very exciting with this installation is that it allows people to create their own mix of color,” Duthilleux says. “That gives them the opportunity to learn about additive color through a process of play and discovery.”

The Science Mill and Patten Studio share a commitment to interactivity. “We want guests to take away a hands-on experience that is memorable and allows guests to have an ‘aha’ moment,” Gray adds. “Light Loom is meeting the interactive mark. It’s also quite innovative. There’s nothing quite like it at the museum. Our guests are allowed to be hands-on with the artwork without physically touching it, which is very important in this day and age.


Meet the Creative Team behind the Light Loom Exhibit Design:

Hortense Duthilleux & James Patten of Patten Studio

Hortense Duthilleux

Art Director, Patten Studio


I am Hortense Duthilleus. I am a French artist and designer mainly working in the field of interactive light art. I am also the Art Director at Patten Studio. I create interactive art installations for museums and for brands, essentially trying to create interactive experiences that inspire others and give them a moment of wow!

What was your journey into your current field?

My journey into art, science, and also engineering and technology started in Paris, France, where I am from. I started to study art and study textile design, which is where I fell in love with colors and experimentation with materials. That journey continued into my Masters degree in London where [I studied] material exploration called “Material Future”. We had [an] opportunity to keep exploring matter, and so I picked light. I started to be exposed to circuit boards and sensors and ways to make that artwork myself and learned a bit of coding and soldering. I was able to start developing the type of artwork I had in mind [to] develop my portfolio to then approach Patten’s studio. By then, I had developed that skillset from different work experiences as a lighting designer and as a set designer that allowed me to integrate into the team.

How did you become interested in working in STEM?

I had a physics teacher that explained to us color and light and how those two interact together. That sparked my fascination and encouraged me to explore more and more into this field. I was seeing people working with interactive art installations and people using light to create light shows and having a person interact with the artwork to create an ever-changing artwork. That’s really what I realized I wanted to do , so when I was 18 years old and I had to find my way to go from doing textile design to doing engineering and technical work.

Tell us about your experience as a Girl working in STEM:

As a female, I have always felt well-received [in my field]. I’ve never experienced specific pushback. If you do not consider yourself any different from anyone else, and that is what you project to others, that is what others will see. I think that if you just keep thinking you are an individual and you are worthy in that field, you will earn everyone’s respect. When you have that statement for yourself and dare to express who you are as an individual and a person, I think everyone will appreciate that and welcome you.

What would you say to your younger self?

At the moment I wanted to do this kind of thing, I had no clue how I would get there or do it. I felt like I did not have the toolset to be legitimate in that space. So what I would want to tell you is pursue your vision. If there is something you are passionate about and if other people are doing it, there is no reason that you cannot be doing it as well. So follow your passion and work toward it and it will come true.

Tell us what or who inspires you:

The role models were definitely those companies, those small studios that work with light and interactive technologies… There are artists like James Terrel who worked with light only … a lot of those artists that use minimal work, but that work with color and optical illusion and vision were all the kind of work that inspired me.


James Patten

Principal & Founder, Patten Studio


My name is James Patten and I am the Director of Patten Studio. Patten Studio builds, broadly speaking, interactive art installations… we create interactive experiences in the physical world that usually involve technology to give people an experience they haven’t had before. One of the themes in our work is connection. We are trying to create experiences that provide people with an opportunity to strike up a conversation with a stranger.

Tell us about your journey into your current role:

I went on to do a PhD at the MIT Media lab and the focus of my work there was all about creating new kinds of interfaces between people and computers. In particular, there was a focus on using physical objects to represent and control information inside of a computer. Ever since then, I’ve been really passionate about this idea of creating experiences that involve some element of computation but where the interaction happens in the real world and this added element of computation creates an opportunity for a really playful experience.

How did you become interested in working in STEM?

I always have had a passion for making things. I had a brief stint in engineering school in undergrad before realizing that all of the math maybe wasn’t necessarily for me. So I wound up with a very interdisciplinary education as an undergraduate with kind of a mix of computer science, psychology, and philosophy.

Tell us about your creative team at Patten Studio:

We have engineers that realize that they would rather be artists and artists that realize they would rather be engineers. They’ve picked up skills from different disciplines along the way… I think the thing that really brings it all together is working across disciplines. The kinds of disciplines that are involved are electrical engineering, computer science, visual arts, graphic design, and other engineering and art fields as well.


DIY Spectroscope

An easy, make-at-home-or-school tool to study the different properties of light along the electromagnetic spectrum.

light loom

Greening our thumbs: different types of gardening and why they are important

Did you know that plants make up 80 percent of the food we eat and produce 98 percent of the oxygen we breathe? At home gardening is a great way to learn how important microorganisms, soil, and plants are. Without plants there would be absolutely no food to eat or oxygen to breathe. Gardening also allows you to try new vegetables and fruits that you may have never tried before: such as passion fruit, yellow cucumber, and kohlrabi.

There are many types of gardening that are easy to start at home. Container gardening is great for beginner gardeners and apartment homes. Simply purchase a large pot with your favorite vegetable and start planting. Growing potatoes in large pots is great because when it comes time to harvest you can simply pour out your container and collect your potatoes.

Raised bed gardening is the most popular form of gardening. This method of gardening requires raising the height of the planting area with wooden boards then filling the area with garden soil. The reason why this style of gardening is the most popular is because sometimes the in-ground soil is too difficult to plant in. This can be due to heavily rocky soil and clay soil.

Peppers growing on a raised bed in the Science Mill Food Forest

In-ground gardening is mostly used in agriculture although it can be found in home gardens as well. In-ground gardening is pretty self explanatory; This is when you plant fruits or vegetables directly into the ground. Fun fact, about 38% of the earth's surface is farmed land, which is typically in-ground planting.

Hydroponics and Aquaponics is a cleaner type of gardening that requires absolutely no soil. Hydroponics is the growing of plants in water with the addition of supplemental nutrients and air stones. Aquaponics, like what you’d see at the Aquaponics Greenhouse here at the Science Mill, is just like hydroponics but replaces supplemental nutrients with fish. Instead of the supplemental nutrients, the fish provide the nutrients for the plants with the addition of microorganisms. This way of gardening also consumes less water — up to 10 times less water than traditional agriculture watering methods in fact!

Aquaponics Grow Towers at the Science Mill Aquaponics Greenhouse

Vertical gardening, the last form of gardening that can be accomplished at home, is growing plants in vertical towers. These towers can be purchased from a company or DIYed at home. This type of gardening is most popular in smaller living spaces because it allows you to get creative on where to grow your plants without taking up so much space.

Curious to learn more in person? The Science Mill is opening a new exhibit called a Food Forest this August 19! This exhibit, made possible by HEB’s Our Texas, Our Future initiative and the Favrot Fund, highlights the importance of at home gardening, technology, and regenerative agriculture. We will be opening three brand new raised garden beds that are filled with edible plants as well as unique plants that are so exciting to look at and learn about. Plan your visit today!




Dissecting a Dogfish Shark: 5 Things We Learned

One of the highlights of Shark Week at the Science Mill were the Dogfish Dissections!

Science Mill STEM Education Specialists conducted several dissections throughout the week to give guests a close look into the anatomy of a dogfish shark. Here are some of the questions visitors asked about dogfish sharks during these sessions — and the answers!

WARNING: This post includes photos and videos of the dissection that some readers may be sensitive to!

  1. WHY ARE THEY CALLED “DOGFISH”?

    Dogfish sharks get their name not because they are related to or resemble dogs in any way. Rather, they were named as such because they hunt in packs, as dogs do! To satisfy their voracious appetites, dogfish sharks tend to hunt for food in groups that can number in the thousands to feed on anything in their way, like octopus, shrimp, crabs, and even fish that can be two or three times larger than them.

  2. JUST KEEP SWIMMING - BUT HOW?

    Most fish have a special organ called a swim bladder which helps them maintain buoyancy without exerting extra energy. Sharks, however, don't have swim bladders; rather, they use oil produced by their livers to control their buoyancy. Proportionally, shark livers can make up 5-25% of the shark’s body weight — in comparison, human livers only take up 2% of the total human body weight!

  3. HOW DO DOGFISH SHARKS HUNT FOR PREY?

    One trait that makes sharks apex predators is their ability to detect electricity in the water through their electroreceptors. The muscular movement and twitching that fish and other living organisms make generate electricity, and sharks are able to sense this through their specialized organ.

  4. WHAT IS THE DIFFERENCE BETWEEN MALE AND FEMALE DOGFISH SHARKS?

    Generally, female sharks tend to be larger than male sharks. But another way to tell is by checking if the shark has claspers, which is a pair of organs near the pelvic fin that is used during mating.

  5. ARE DOGFISH SHARKS ENDANGERED?

    While dogfish sharks can be found in most waters around the world, they are also some of the most heavily fished sharks. This is because they serve as a source of meat (often used in fish and chips in the UK and in shark fin soup), liver oil, fertilizer, and fish food.

Making initial cuts for dissection

Examining the internal anatomy of the shark

Science Mill guests getting a closer look at the dogfish shark specimen

Watch the full dissection below!

What is healthy soil?

Welcome to the third part of #ScienceMillSTEMsday!

This week, let’s take a close look at an important but often underestimated part of the ecosystem: healthy soil!

So what IS healthy soil?

Healthy soil is the foundation of successful agriculture and sustainable ecosystems. As stewards of the land, understanding the indicators of soil health is crucial for farmers, gardeners, and environmentalists alike. Think about it - our lives heavily depend on soil performing vital functions such as supporting crop growth, encouraging biodiversity, and water regulation. By examining key characteristics, we can assess the condition of the soil and make informed decisions to improve or maintain its vitality.

  1. Soil Texture and Structure
    Soil texture refers to the proportions of sand, silt, and clay in the soil. Healthy soil has a balanced composition, often referred to as loam, which promotes proper drainage and aeration while retaining sufficient moisture. Furthermore, good soil structure allows for root penetration, nutrient absorption, and microbial activity. Well-aggregated soil, characterized by the formation of stable granules or crumb-like structures, indicates a healthy ecosystem below the surface. Conversely, compacted soil lacking in structure can impede plant growth and reduce water infiltration.

  2. Soil Organic Matter
    The presence of organic matter in the soil is a strong indicator of its health. Organic matter, such as decomposed plant and animal materials, enhances soil fertility, moisture retention, and nutrient availability. It serves as a food source for beneficial soil organisms, including bacteria, fungi, and earthworms, which help break down organic matter and contribute to nutrient cycling. Darker soil coloration usually suggests a higher organic matter content. Regular additions of compost or organic amendments can boost soil organic matter, improving its overall health and resilience.

  3. Soil pH
    Soil pH is a measure of its acidity or alkalinity and greatly influences nutrient availability to plants. Most crops prefer a slightly acidic to neutral pH range. Acidic soils limit the availability of essential nutrients, while alkaline soils may cause nutrient imbalances. Regular soil testing helps identify the pH level, enabling growers to adjust it through amendments. Maintaining an optimal pH balance is essential for efficient nutrient uptake, maximizing crop productivity, and fostering a diverse soil microbial community.

  4. Soil Moisture
    Adequate soil moisture is essential for plant growth and microbial activity. Healthy soil should possess a good water-holding capacity while allowing excess water to drain away. The ability to retain moisture depends on factors such as soil texture, organic matter content, and compaction. Soil that remains too dry or too waterlogged can negatively impact root development and reduce the availability of essential nutrients. Regular monitoring of soil moisture levels helps optimize irrigation practices and conserve water resources.

  5. Biodiversity and Soil Life
    When you walk on soil, you probably don’t realize the incredible biodiversity that exists right beneath your feet! A thriving soil ecosystem teems with a diverse range of organisms, including bacteria, fungi, nematodes, earthworms, and insects. The presence of these beneficial organisms indicates a healthy and balanced soil environment. These organisms contribute to nutrient cycling, decomposition of organic matter, and pest control. Earthworms, for example, help improve soil structure through their burrowing activities. Promoting biodiversity aboveground, such as through crop rotation and cover cropping, can also have a positive impact on soil health by providing diverse organic inputs and fostering a symbiotic relationship with soil life.

PRINCIPLES OF SOIL HEALTH

As you can tell by now, healthy soil is important for many reasons. However, not all soils are healthy; in fact, there are numerous threats to soil health, which include erosion (due to water, wind, or tillage), carbon loss, nutrient imbalance, among others.

To create or maintain healthy soil, there are four basic principles:

  1. Maximize biodiversity - this helps ensure a balanced habitat for soil organisms. Lengthening crop rotation, adding perennials, planting cover crops, and having grazing livestock are some ways of doing this.

  2. Minimize disturbance - disturbance can take the form of physical disturbance (like tilling), chemical (which can disrupt the food web), or biological (which can be a result of low biodiversity). Minimizing this allows the soil time to recuperate and regulate.

  3. Maximize living roots - roots nourish the microbes in the soil by providing food and releasing nutrients that contribute to overall soil health, such as by increasing the soil’s level of organic matter.

  4. Maximize soil cover - soil cover refers to vegetation, crops, or crop residues that cover the soil which play an important role in controlling erosion and keeping the soil cool.


GIVEAWAY

Every Wednesday this July, the Science Mill will be on We Are Austin to talk about awesome science topics and an activity you can do at home! Post a photo or video of you/your family doing the activity on either Facebook OR Instagram and get the chance to win a family membership for 4 to the Science Mill!

MECHANICS:

  1. Like our giveaway post and follow/like our Facebook and Instagram pages

  2. Post your entry on Facebook or Instagram and tag it with #ScienceMillSTEMsday

For this week, learn more about the microscopic world around you by extracting nematodes from the soil! Nematodes are very small worms commonly found in soil, especially around plant roots. They help regulate pest organisms and even help release nutrients beneficial to plants! Through this simple at home activity, which only requires any soil sample, some facial tissues, mesh, and a pan with water, you can test your sample for the presence of nematodes!

Source: USDA Agricultural Research Service

Source: USDA Agricultural Research Service

Simply document your experiment, post it on Facebook or Instagram, and tag us to participate in this week’s #ScienceMillSTEMsday activity!




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