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Monthly Archives: October 2017
Santa Rosa Fires And My Coworkers
I work for a company that is headquartered in Petaluma, California, which is just south of the Santa Rosa fire region. Six employees lost their homes in this fire. One employee, Danny Pomplun, and his wife, narrowly escaped the fire by sheltering in their pool. Their dramatic story is told very well in this Washington Post article. If you cannot gain access to the original news article, try this PDF of this story. Continue reading
Posted in Personal
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Thermoelectric Cooler Calculation Example
My team is work hard on Dense Wavelength Division Multiplexing (DWDM) optical systems for communications applications. These systems put multiple wavelengths on a single fiber, and they provide our customers the opportunity to deliver significantly more bandwidth without needing to additional fiber optic cables. Continue reading
Posted in Electronics, Excel, optics
1 Comment
Torpedo Engine Technology for a Venus Space Probe?
I just finished reading an interesting article on a NASA proposal for a Venus space probe that uses power generation technology developed for a US Navy torpedo program back in the 1980s. Like many spacecraft, torpedoes need power generation systems that are small, generate massive power for a short period, and must be storable for years with the ability to turn on almost instantly with high reliability. Continue reading
Posted in Naval History, Space
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One Drink Per Hour Can Get You Drunk
Back in 2011, I wrote a blog post that goes into the details on how the Blood Alcohol Content (BAC) versus drinks/time/gender are computed (Figure 1). These charts tell people how much they can drink and still stay under the BAC limits for driving under the influence. These charts are for a typical drinker and the actual BAC value will vary by person. Continue reading
Posted in General Mathematics, Health
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Countries That Are Graying Fastest
I have been working hard to address the issues associated with an aging workforce (blog post). However, aging is problem for the entire world – the median age of the world is increasing. Aging populations put enormous strains on the infrastructure of country. I have been reading quite a few articles lately on the effect of aging populations on quite a few developed nations: South Korea, China, Germany, and Italy. Many nations are facing the problems associated with aging populations: high medical expenses, providing elder care, paying pensions, etc. Continue reading
Posted in History Through Spreadsheets
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