Wow – Water Displacement!!

image6Check this out!

Why does it look like the water opens up around him as he jumps into the water?

The answer is water displacement.

Let’s have a closer look.

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When you jump into water, you are taking the place of the water. The pressure (and force) displaces it.

The bigger surface area of water you take the place of, the bigger the displacement and the bigger the splash.

Since the pressure of your body goes into the water at different directions, the displacement (and splash) comes up and out of the water in different directions.

Check out this water displacement – doesn’t it seem as if a hole is swallowing him up?

image1Another way of thinking about it would be to compare a dive and a cannonball.

A dive, done properly, disturbs a small surface area, displaces little water and has a small splash while a cannonball disturbs a bigger surface area, displaces a lot more water and has a big splash.

.jpgimage5Use your imagination and picture how much water would be displaced by this crazy jump!

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Lots of splash and water displacement or a tiny splash and little water displacement?

How about this one?

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I’ve always found water and science fascinating – how about you?

Here’s another question – do you think the speed of entry affects water displacement too?

Watery Photo Fun

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Taking friends and family pictures pool-side can be a great summer tradition.

Ask them to show you their newest tricks and get ready for some fun!

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Whether it’s swimming with snorkels and fins, jumping in or floating, they will love to see the photos you take year after year.

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Don’t forget to take pictures above the water and around the pool when the summer sun is shining and both the smiles and the blues of the water are bright.

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Oops! I Flooded my Camera Housing!

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I broke my own rule and didn’t check my equipment before getting in.

I put my camera in the housing, put my goggles, turned on the camera and swam underwater into the deep end.

And then my housing started filling up with water.

OOPS!

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I swam up to the surface and lifted my underwater housing out of the water, treading water and watching in horror as water pooled inside.

While I was watching the camera flickered off.

AGH!

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I frog kicked to the side of the pool, climbed out and removed the camera from the underwater camera housing.

Water came pouring out of the battery compartment.

AGH!

This is where I was lucky because even though I was in a panic, I remembered not to try turning on the camera.

Instead, I removed the battery, went into the house and quickly put the camera into a huge bag of rice. I put it back into my pantry, closed the door and left it there for four days.

It was hard not to try turning it on before then but the theory is that dry rice sucks the moisture out of your equipment.

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I was very lucky again because when I put a freshly charged battery inside and turned it on, it did turn on.

Whoo-hoo!!

I didn’t even lose the memory card which was also lucky since I hadn’t downloaded it yet.

Afterwards, I figured out it was my fault my camera housing had failed. I had taken out the O-ring to give it a light lubrication and forgotten to put it back on.

Please learn from my mistake and always make sure you check all the O-rings are in and the latches are sealed before getting in and submerging your photography equipment.

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And yes – this is a magnifying glass – don’t you just love the effects that it created!

The Sun & Silohouettes

Instead of using the sun’s natural light indirectly, try including the sun in your photographs.

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You can also use the sun as a back light by angling your camera up.

Try posing your friends in the shot with straight legs, arms or both to create a strong image.

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The closer to blocking out the sun entirely will result in these types of shots. You will typically see less detail.

 

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Angle the sun a bit further to the side for these types of shots so you can see more detail and colour.

Bear in mind, none of the shots were taken with an underwater flash.

Don’t forget to try a selfie!

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Bunny Ears and More!

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Do you have a favourite pair of bunny ears in your tickle trunk?

Try out sunglasses or a lei!

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You can also bring in props like a toy or stuffy but just remember you’ll need to dry them afterwards especially if they have any metal (like the wheels on this skateboard!) or they will rust.

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Diving toys are great for deeper shots while you can get creative with just about anything  close to the surface in the shallow end.

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Remember to be safe and don’t bring anything into the water that is breakable, too heavy or can be wrecked by being submerged. If you are not sure, ask a parent first.

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Have fun and be creative!

Fun & Fast Facts

 

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Here are some of my favourite fun & fast facts about photography and underwater photography!

1839 – Photography is invented.

Imagine being the first person to take a photo of the moon!

1856 – The first underwater photograph is taken.

Imagine only being able to take black and white photographs!

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1923 – First colour underwater photographs are taken.

Imagine you have to develop the film first before you know if you got the photo of the fish swimming by!

1943 – Jacques Costeau’s Aqua-lung prototype is tested.

The beginnings of scuba diving and underwater photography together!

1961 – The start of digital photography.

This is a game changer – you can see what you take a photograph of right away!

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1986 – The photographs of the Titanic shipwreck are taken.

Imagine seeing images from 12 500 below the surface of the ocean!

1995 – The digital camera BOOM.

The technology grows in leaps and bounds!

2002 – Underwater digital camera is easy to purchase.

Underwater photography can be tried out by anyone!

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2002 – GoPro is founded.

An epic achievement!

2016 – Oculus (and other companies) release Virtual Reality products featuring underwater video which brings the sensations of diving to the masses.

VR underwater – wow!

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One last fun, fast fact:

In 2017, the Natural History Museum in Las Angeles launches a VR experience named “The Blu” in which visitors can experience what is it like to swim with a blue whale. They are hoping it will, amongst other things, generate greater sense of responsibility for marine habitats.

Here are the resources I used to generate these fun, fast facts.

Delve even deeper into the history of photography and underwater photography using the links below.

underwater photography information at www.w360.asia

the original fun & fast facts finder at www.wikipedia.org

more history here at www.timetoast.com

interesting tidbits can be found at www.digicammuseum.com

for lots of underwater scuba information click www.scubadiving.com

the latest technology information to check out is at www.technologyreview.com

everything about underwater photography!

www.underwaterphotography.com

 

 

Bubbles

Bubbles are created by releasing air underwater where the air automatically and very quickly rises up towards the ceiling (or surface) of the water.

You can create bubbles by releasing air in a variety of ways; including blowing bubbles.

DSC_1987 (2)Another way I create bubbles is to trap air in buckets and cups and pull the cup downwards under the water as deep as I can. I then tilt the cup, allowing the air to escape and follow the air bubbles, shooting as I go. Try different sized cups for different sizes of bubbles.

Splashing also creates lots of bubbles, often breaking big ones into lots of tiny air bubbles.

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These fun techniques take time to master so be patient.

Here are a few more examples of air bubbles I have photographed underwater.

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