Bub Junk

Just to add to the previous response - there's actually a nice distinction here. रोगी specifically refers to someone suffering from a disease (roga), while मरीज़ comes from Arabic and is used more broadly for anyone under medical care.

In medical contexts, you'll often see signs saying "रोगी विश्राम कक्ष" (patient rest room). The adjective form "patient" as in "please be patient" is definitely धैर्यवान - I remember my grandmother always telling us "धैर्य रखो" when we were impatient kids waiting for sweets!

This is a fascinating aspect of Hindu Brahmin dietary practices with roots in ancient Ayurveda and spiritual beliefs. There are several reasons why many Brahmins avoid onion and garlic:

Spiritual reasons: - Sattvic diet: Brahmins traditionally follow a sattvic (pure) diet to maintain mental clarity for spiritual practices. Onions and garlic are considered rajasic (energy-stimulating) and tamasic (dulling), which can distract from meditation and worship. - Deity worship: Some scriptures suggest these foods create impurities that aren't conducive to temple worship or ritual purity.

Ayurvedic perspective: - Onions and garlic are believed to increase heat in the body and stimulate desires - They're thought to affect meditation by increasing restlessness

Historical context: - This practice is mentioned in several ancient texts including the Charaka Samhita - It was particularly emphasized for Brahmins engaged in Vedic studies and rituals

It's important to note that not all Brahmins follow this strictly today, and practices vary by region and family tradition. Many modern Brahmins do consume onion and garlic, especially those living outside India or in more progressive families.

The practice is similar to how some Buddhist traditions also avoid alliums for meditation purposes. It's about creating the optimal mental and physical state for spiritual pursuits.

To build on the previous answer, let me explain activation energy in terms of what's actually happening at the molecular level:

At the particle level: - Molecules need to collide with enough energy to break existing bonds - They also need proper orientation for new bonds to form - Activation energy is that "enough energy" threshold

How catalysts work: Catalysts (like enzymes in your body) lower the activation energy by providing an alternative pathway for the reaction. It's like digging a tunnel through the hill instead of going over it!

Typical values: - Low Eₐ: 10-50 kJ/mol (fast reactions at room temperature) - Medium Eₐ: 50-100 kJ/mol (moderate speed) - High Eₐ: >100 kJ/mol (slow unless heated)

Real example: The decomposition of hydrogen peroxide has Eₐ of about 75 kJ/mol, which is why it decomposes slowly at room temperature. But add a catalyst like manganese dioxide, and the Eₐ drops dramatically, making it decompose rapidly!

This concept is crucial in everything from designing industrial chemical processes to understanding how our bodies metabolize food. Even the battery in your phone relies on reactions with carefully engineered activation energies.

The beautiful thing is that this one concept helps explain why some reactions need heat, why enzymes are so important in biology, and why some materials are stable while others react easily.