Spit Ball Myth Explained by Early 20th Century Study
A detailed exploration of the famous spit ball argues it moves due to air friction and spin rather to any fixed mechanism. It compares baseballs to bullets and rifles, noting irregular air pockets and spin causing unpredictable paths despite scientific intent.
Quietly Built Cars Endure Longer Through Precise Craft
A historical piece on automotive manufacturing stresses micrometers and stethoscopes to detect tiny faults that would shorten a car’s life. Fatigue of material, proper piston ring tests, and exact fitting prevent noise and wear, promising longevity and ongoing value for buyers.
Electricity Destroys Fat Through Intermittent Currents
The article explains that fat loss comes from alternating electric currents rather than steady flows. Induced currents or rapidly interrupted voltaic currents produce muscle activity that uses fat, with the key being variable direction and strength. No fatigue occurs since the patient remains passive.
Sweetest in anger says Harvard lecturer on fear study
Professor Cannon argues that anger and fear heighten bodily energy by increasing blood sugar and adrenaline while shifting blood flow to organs. He notes similarities between humans and animals and claims emotions can aid digestion and prevent disease, though risks include injury from sudden anger.
MENTIONED IN THIS ARTICLE
Harvard — Medical School
Cannon
W. B. Cannon
Fabre
Fabore
Baths That Harm Or Heal In Cold Or Warm Water
The article argues baths can help health when used briefly and followed by warming afterward. It warns that weak individuals and those with heart or circulation risks may be harmed, and that long warm soaks depress rather than refresh. A cold bath should be optional and not leave a chill.
Sea bathing conditions and health effects in early guidance
The article outlines benefits and cautions of sea and Turkish baths. It notes sea bathing stimulates nerves and vital organs, aids those with vitality, and helps dyspepsia gout anemia and diabetes while advising against use for consumptives rheumatism heart disease and debility. It also covers child bathing and elderly benefits from regular warm baths and gradual temperature reduction.
Insect Senses and New One Hand Clock Inventions
The article contrasts insect olfactory prowess with poor vision and describes patented clock innovations. A one hand clock places the minute hand on the hour spindle for easier reading, reducing misreads, especially in rail offices. A second vertical dial offers hours and minutes with a single moving hand and can display timetables and engagements.
Blood Stain Removal Tips from 19th Century Note
The fragment suggests using ammonia to remove blood stains and notes lilies improving with a cup of hot water poured on them now and then. It reflects household cleaning and plant care hints from an older period.
Cleaning Brass and Aluminum Care Tips
Cleaning brass requires monthly washing with vinegar and water then drying with powdered rotten-stone and chamois. For aluminum utensils remove stains by dissolving oxalic acid crystals in water and soaking briefly, then rinse. If using hard water, deposits can be removed with vinegar or sulfuric acid, followed by thorough washing.
Plants gain from ARBIDE powder for growth and foliage
ARBIDE the pearly gray powder from acetylene lamps is recommended for use around plants. It stimulates growth of both flowers and foliage.
Milk Purity Test With Needle Method
A historical test describes dipping a polished knitting needle into milk and pulling it out. If pure milk, fluid clings to the needle. if water is added, the liquid fails to cling, indicating adulteration.
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