18 Matching Annotations
  1. Mar 2025
  2. Feb 2025
    1. reply to u/HenRoRo61


      Earlier today, in a now-deleted post, someone had posted a question about identifying one of Helen Keller's typewriters based on this video in her archive.

      Having done some initial digging, I thought I'd share some of the details I've found for those who may find it interesting.

      According to researcher Richard Polt, Helen Keller was known to use both a Hammond and an L.C. Smith no. 5.

      As for the Remington Noiseless, it definitely appears to be a mid-century Noiseless Standard with a tabulator. To know the year, you'd need either the specific serial number (to cross check https://typewriterdatabase.com/remington.42.typewriter-serial-number-database) or you'd need many more examples than the Typewriter Database currently has listed under the generic Remington Noiseless.

      If you're careful at looking at the design choices and changes in some of the Remington Portables from that time period which would have likely tracked the design changes of their desktop standards, you might be able to extrapolate a closer dating based on the styling, but this will still only give you a dating within a year or so.

      The tabulator was at the top of the keyboard by 1937, so you can probably presume it was a model from that point or thereafter until 1954. Most American typewriter manufacturers didn't make machines from '41-45 due to WWII, so you can discard those dates. Remington had moved into thicker/taller plastic keys by the early 1950s, so I would guess her machine was more likely from the late 1940s.

      Looking more closely at the Remington Noiseless 10, I'd suggest that this is the most likely set of candidates, particularly in the timeframe of 1946-1947. Hers obviously had the openings in the rear and had the metal covers on the sides (as opposed to glass found on some models). Comparing hers in the film to some of these individual galleries may help to narrow things down with respect to dating.

      Perhaps others with more Remington Standard experience, may be able to narrow things down here.

      The appraisal of her Remington Noiseless in 1957 was $135.00.

      One might find some close noiseless models in the $20-40 range + shipping (these are about 30 pounds and will cost about $35 for shipping) via ShopGoodwill.com. Here are some recent sales for comparison. Based on the video you'll want the bigger, heavier ones (25+ pounds) rather than the smaller portables with cases (usually under 20 pounds). Generally machines purchased this way are reasonably functional, but usually need some cleaning and work to be restored to full functionality.

      Unless you're sure they're being sold by repair shops and have been cleaned and are fully functional, don't overspend on potential exemplars on sites like Etsy or eBay which are likely to be only marginally better (aka dusted off) than ShopGoodwill machines, but at 5-10x the price.

      Hellen Keller's brailler: https://www.afb.org/HelenKellerArchive?a=d&d=A-HK08-B049-183&e=-------en-20--1--txt--typewriter------3-7-6-5-3--------------0-1

      She apparently owned a \~1938 or 1939 Corona Silent as well: https://www.afb.org/HelenKellerArchive?a=d&d=A-HK08-B045-184.1.1&srpos=19&e=-------en-20--1--txt--typewriter------3-7-6-5-3--------------0-1

      One might have some luck trying to find a Corona Silent typewriter from that era, but the unique color is going to put a machine like it into the $100-200 range (at a minimum and potentially going up from there depending on the condition) unless you get lucky at a garage sale somewhere.

  3. Aug 2024
  4. May 2023
    1. The video shows the productivity books which Sheldon used to help design his system including 99u's Manage Your Day-To-Day, Unsubscribe by Jocelyn K. Glei, The One Thing by Gary Keller, Getting Things Done by David Allen, Deep Work by Cal Newport, and Atomic Habits by James Clear.

  5. Apr 2022
  6. Jun 2020
    1. Theoretical Yields When reactants are not present in stoichiometric quantities, the limiting reactant determines the maximum amount of product that can be formed from the reactants. The amount of product calculated in this way is the theoretical yield, the amount obtained if the reaction occurred perfectly and the purification method were 100% efficient. In reality, less product is always obtained than is theoretically possible because of mechanical losses (such as spilling), separation procedures that are not 100% efficient, competing reactions that form undesired products, and reactions that simply do not run to completion, resulting in a mixture of products and reactants; this last possibility is a common occurrence. Therefore, the actual yield, the measured mass of products obtained from a reaction, is almost always less than the theoretical yield (often much less). The percent yield of a reaction is the ratio of the actual yield to the theoretical yield, multiplied by 100 to give a percentage: percent yield=actual yield (g)theoretical yield(g)×100%(3.7.29)
    1. What happens to matter when it undergoes chemical changes? The Law of conservation of mass says that "Atoms are neither created, nor distroyed, during any chemical reaction." Thus, the same collection of atoms is present after a reaction as before the reaction. The changes that occur during a reaction just involve the rearrangement of atoms.
    2. C7H16(l)+O2(g)→CO2(g)+H2O(g)(3.1.4)(3.1.4)C7H16(l)+O2(g)→CO2(g)+H2O(g) C_7H_{16} (l) + O_2 (g) \rightarrow CO_2 (g) + H_2O (g) \label{3.1.3} The complete combustion of any hydrocarbon with sufficient oxygen always yields carbon dioxide and water. Figure 3.1.23.1.2\PageIndex{2}: An Example of a Combustion Reaction. The wax in a candle is a high-molecular-mass hydrocarbon, which produces gaseous carbon dioxide and water vapor in a combustion reaction (see Equation 3.1.43.1.4\ref{3.1.3}). Equation 3.1.43.1.4\ref{3.1.3} is not balanced: the numbers of each type of atom on the reactant side of the equation (7 carbon atoms, 16 hydrogen atoms, and 2 oxygen atoms) is not the same as the numbers of each type of atom on the product side (1 carbon atom, 2 hydrogen atoms, and 3 oxygen atoms). Consequently, the coefficients of the reactants and products must be adjusted to give the same numbers of atoms of each type on both sides of the equation. Because the identities of the reactants and products are fixed, the equation cannot be balanced by changing the subscripts of the reactants or the products. To do so would change the chemical identity of the species being described, as illustrated in Figure 3.1.33.1.3\PageIndex{3}. Figure 3.1.33.1.3\PageIndex{3}: Balancing Equations. You cannot change subscripts in a chemical formula to balance a chemical equation; you can change only the coefficients. Changing subscripts changes the ratios of atoms in the molecule and the resulting chemical properties. For example, water (H2O) and hydrogen peroxide (H2O2) are chemically distinct substances. H2O2 decomposes to H2O and O2 gas when it comes in contact with the metal platinum, whereas no such reaction occurs between water and platinum. The simplest and most generally useful method for balancing chemical equations is “inspection,” better known as trial and error. The following is an efficient approach to balancing a chemical equation using this method.
  7. Mar 2019
    1. This page describes a method of teaching designed specifically for adults. The instructional design theory is Keller's "ARCS," which stands for attention, relevance, confidence, and satisfaction--all features that adult learning experiences should be characterized by. The text on this page is readable but the popups and graphics are a bit annoying. rating 3/5

  8. Dec 2016
    1. al telephone.

      Helen Keller was associates with important such as Alexander Graham bell and President Roosevelt.

    1. Not was Helen Keller the face for the AFB but she was also a national leader for the socialist party. This info shows that she was a big part of the 20th century not only for disabled but for everyone else as well.

    1. People who are deaf-blind have marketable skills and strategies to compete and succeed in the workplace.

      Just because people have disables doesn't mean that they have to be discriminated on, Helen Keller started a revolution for improving the life for people that are deaf or blind.

    2. Helen Keller National Center for Deaf-Blind Youths & Adults

      Helen Keller's achievements in creating many foundations were celebrated around the world to recognize the achievements of many blind and deaf people.

    1. resolved

      There was a fire lit underneath her when she found out that she could learn to speak and she went ahead and learned French German and english.

  9. Jan 2016
    1. Getting and staying healthy involves tending to the people-oriented aspects of leading an organization, so it may sound “fluffy” to hard-nosed executives raised on managing by the numbers. But make no mistake: cultivating health is hard work. And it shouldn’t be confused with other people-related management concepts, such as employee satisfaction or employee engagement.

      I am looking forward to what these authors will provide as a recipe for cultivating health, and how they define organizational health.