Segments in this Video

Heat-Comfort and Capacity to Protect (03:42)


Motorcycle riders are less likely to wear protective clothing during hot Australian summers. Mark Horstman and Liz de Rome are testing motorcycle gear on the market for its safety mechanisms.

Energy Replication Experiment (03:54)

To simulate the amount of energy he would expend on a motorcycle ride in 35 degree Celsius weather, Horstman rides a bike in a heated room for 90 minutes while wearing heavy motorcycle gear. Fans simulate wind speeds.

Abrasive Injury Protection (04:00)

After the experiment, de Rome helps assess how Horstman is affected. He takes a test that measures how heat stress affects his concentration. Australia does not have any standards set for clothing worn by motorcyclists aside from helmets.

Spotting Trouble in Gear (02:25)

Horstman confers with an expert on motorcycle gear. Their experiments show that para aramid lasts the longest in abrasive-injury tests, while ballistic nylon is destroyed the earliest.

Abrasion, Impact, and Comfort (02:57)

The test results of Horstman's 90 minute bike ride show that he lost a liter and a half of sweat and was close to hyperthermia. Bernard rCarlon suggests a five-star rating system for motorcycle gear that will allow consumers to make informed purchases.

LIGO Detector (04:46)

Gravitational waves have recently been detected for the first time through gravitational wave telescopes. Black holes are invisible to human telescopes, since they do not emit electromagnetic radiation. Scientists like David Blair are working to make them observable.

Pairs of Black Holes (05:01)

Blair demonstrates the way the gravitational waves work through ripples in a pond. The LIGO detectors picked up an explosion that occurred when two black holes collided. The sound that occurs is known as a "chirp" in scientific communities.

Credits: Motorcycle Clothing / Gravitational Waves: Catalyst (00:37)

Credits: Motorcycle Clothing / Gravitational Waves: Catalyst

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Motorcycle Clothing / Gravitational Waves—Catalyst

Part of the Series : Catalyst
DVD (Chaptered) Price: $129.95
DVD + 3-Year Streaming Price: $194.93
3-Year Streaming Price: $129.95



The protective gear worn by motorcyclists can be extremely hot and uncomfortable in sweltering Australian conditions. Does heat stress contribute to accidents, and how protective is safety gear anyway? Mark Horstman lays his mind and body on the line as scientists put motorcycle clothing to the test. Also, what did the beginning of time look like - that moment of creation? What are the biggest explosions in the universe like? We’ve never been able to observe these dramatic cosmic events in the past because they are invisible to all of our telescopes. But now, with the detection of gravitational waves, which Einstein predicted 100 years ago, that’s about to change. Gravity waves are very different to light waves or radio waves, which today’s telescopes detect: they are ripples in the very fabric of space-time itself. Now that they’ve been detected, scientists can start building a new kind of telescope that will pick up gravitational waves, rather than light or radio waves, and allow us to observe a whole host of new astronomical phenomena, including, one day, a glimpse of the big bang itself.

Length: 28 minutes

Item#: BVL117862

ISBN: 978-1-63521-298-3

Copyright date: ©2016

Closed Captioned

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Only available in USA and Canada.