Tag Archives: Video

All video on this site.

What to Watch 22: The Lithium-Ion Battery – How Many Joules 1

Intro to 18650 Li-ion Cells, by LDSreliance

How Many Joules?

  • 1 Food Calorie (the one on nutrition labels) = 4,180 joules
    • Note: 1 food Calorie defined as amount of energy to raise the temperature of 1Kg of water 1°C at sea level
  • Typical smartphone battery charge: 41,760 joules
  • One 18650 Li-ion cell: 43,074 joules
  • 1 kBTU = 1.06 million joules
    • Note: 1 BTU is defined as the energy required to raise the temperature of 1 pound of water 1°F. 1 kBTU = 1,000 BTU.
    • The rating system on appliances that we are familiar with that is shortened to “BTU” is actually BTU or kBTU per hour.
  • 1 Kilowatt-hour = 3.6 million joules
  • 2,000 food Calories = 8.4 million joules
  • 1 gallon of gas equivalent = 120 million joules
Go to How Many Joules 2

What to Watch 20: Apocalypse Soundtrack – Apocalypse 3

Johnny Cash – The Man Comes Around

R.E.M. – It’s the End of the World as we Know It

Paulinho Moska – O Último Dia (The Last Day)

The song is in Portuguese, but the pictures tell the story.

My love, if you were given just one more day, what would you do? Would you…?

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What to Watch 15: Fusion and the Cold War

The Tsar Bomba, Largest Man-Made Explosion Ever, October 1961, Discovery Channel

  • Hiroshima, Japan, WW2: 16,000 tons of TNT equivalent
  • Nagasaki, Japan, WW2: 22,000 tons of TNT equivalent
  • Tsar Bomba device: 50,000,000 tons of TNT equivalent: more than 2,000 times the explosive energy of each of the bombs that leveled 2 entire cities in Japan in 1945.

Cuban Missile Crisis 1 by Extra Credits History

Cuban Missile Crisis 2 by Extra Credits History

Cuban Missile Crisis 3 by Extra Credits History

Hiroshima Peace Memorial Museum Website, English
Click here for WTW 14 Fusion as an Energy Source.
Click here to search “fusion” on this site.

What to Watch 14: Fusion Energy, 16 Minutes

1. Fusion Explained in a Nutshell by Kurzgesagt

2. JET, Joint European Torus, largest magnetic confinement fusion reactor.

  • JET is the current record holder for controlled fusion energy production by most measures. The record was set in 1997. See video.
  • Located in Oxfordshire, UK.
  • Annual budget 2014-2018 = 145.6 million euros ~ $175 million per year. Source.
  • Video is from 2014.

3. National Ignition Facility, was the largest effort at inertial based fusion.

  • The fusion ignition effort ended in April 2014, but is still one HUGE laser. Do not point this laser at your eye.
  • Located in California, USA.
  • NIF total cost was ~$3.5 billion. Source.
  • Video is from 2009.

4. More References


Click here for the historical context of fusion, fusion in the Cold War.

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What to Watch 13: Cryptocurrency 2, the Blockchain in Society and Pop Culture, 22 Minutes

The Blockchain in Society, We’ve Stopped Trusting Institutions and Started Trusting Strangers, Rachel Botsman on TED, June 2016

Blockchain in Pop Culture, Lovesong for Satoshi Nakamoto Whitepaper by “Bitcoin Girl” Naomi Brockwell, November 2015

Of Note

My Personal Conclusion on Cryptocurrency (For Now)

The idea behind Bitcoin is that you do not have to trust banking institutions. The transactions are verified by the technology / other users. I researched signing up for Bitcoin, and decided not to. The problem I found was in order to access the blockchain and “own” Bitcoin, you need a computer program to do it. The computer program is written by a coder and I am not going to take the time to understand the code. Therefore, instead of trusting an institution, I am trusting the coder who is the middleman who wrote the code. I actually trust both the banks and the coders (with a little research), but I do not have a reason to switch. The only advantage I see is that there is no tax trail, but I am not paying taxes on these transactions anyway. I don’t need a brand new currency in my life. Sticking with PayPal, Venmo, TransferWise, and dollars, for now!