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Science / November 28, 2020
What's the Difference Between Table Salt and Himalayan Salt
by Michelle Muller
Salt is everywhere. Even if you can't taste it, the chances are good that it's in everything from our breakfast oatmeal to the salad we brought for lunch. Salt consumption has gotten out of hand, turning from a way to preserve food into a cheap commodity used to flavor our favorite salty snacks. It's so inexpensive that you probably don't think twice about the price tag of a box at the store unless you're opting for a bottle of the expensive pink Himalayan salt. Sodium is a chemical element found primarily in salt, and it's also an essential nutrient for life, according to the American Heart Association, which recommends no more than 2,300 milligrams of sodium per day. The association points out that the average American eats 3,400 milligrams of sodium per day, with 70 percent of that sodium coming from packaged foods, not the salt shaker on their dining room table.
In recent years, the conversation has moved more to the difference between salts. Table salt has only been around for the last 100 years or so. Before that, salt was a rare commodity that wars were fought over (via UCHealth Today). Thanks to mining, manufacturing, transportation, and chefs, we now have broader access to international ingredients and many salts to choose from. But what is the difference between table salt and pink Himalayan salt? Is one better for us? Do they have the same sodium content? And does Himalayan salt have beneficial nutrients that table salt does not? We all know that Himalayan salt costs more than table salt, but is there a big difference in the salt itself, other than it is a pretty pink color? For starters, table salt contains added iodine for thyroid health, as well as anti-caking agents, to help it flow, according to Seattle Sutton's. Himalayan pink salt has trace amounts of minerals such as potassium, calcium, and magnesium, which table salt does not. However, the number of minerals is so low, nutrition labels for Himalayan salt usually state that a serving contains zero percent of the daily value of each nutrient. Speaking of undetectable elements, Himalayan pink salt may also contain small amounts of arsenic, uranium, and lead.
The difference in the sodium content of table salt versus Himalayan pink salt is also negligible. The USDA reports regular table salt having 581 milligrams of sodium per 1/4 teaspoon and Himalayan pink salt having 388 milligrams of sodium per 1/4 teaspoon. Yes, that's different, but only because pink salt is coarser. The amount of sodium in Himalayan pink and table salt is the same by weight. So choose the salt that you like the best, and eat it in moderation.
The Wisdom Segment
I While they may be referred to as black boxes, flight recorders arent black at all. In fact, these electronic recording devices, which are placed in aircraft, are colored bright orange as this makes them easier to locate after crashes. The purpose of these misnamed devices is to shed light on the causes of aviation accidents or incidents. The information they hold can be invaluable for investigators.
II The flight data recorder is often abbreviated to FDR (not to be confused with the former president) and is used to preserve the flight's history. It works by recording parameters gathered many times per second. Then there is the cockpit voice recorder, also known as CVR, which records the conversations of the pilots. Used together, these two devices narrate the aircraft's flight history, making them the perfect tools to assist in investigations.
III Mata Hari was the first modern flight recorder, created by Finnish aviation engineer Veijo Hietala in 1942. It correctly recorded all the essential details of test flights from fighter aircraft which had been repaired by the Finnish army. This took place in Tampere, Finland, in the countrys main aviation factory.
IV An even earlier attempt at a flight recorder was created in 1939 by Franois Hussenot and Paul Beaudouin. Their device was pieced together at the Marignane flight test center in France. Their "type HB" flight recorder was photograph-based, using a scrolling photographic film that was eight meters long by 88 millimeters wide.
V Because FDRs are usually double-wrapped in titanium or stainless steel, they are virtually indestructible and can withstand extreme conditions. The most crucial part holds the CSMU (crash survivable memory unit) and is subjected to rigorous tests, including weights of 227kg being dropped on the unit from three meters above the ground.
VI Underwater locators are attached to flight recorders, emitting a pulse once it senses water. These work up to a depth of four kilometers and signal for 30 days to indicate its location until it is found. Such features have helped shed light on many flights that took a plunge into the ocean, including the Atlantic Ocean crash of Air France flight 447.
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